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Proactive Heat Pump Repair | Maintaining Comfort and Efficiency

Updated: Apr 11

Among the various HVAC solutions available, commercial heat pumps stand out as versatile and effective systems for both heating and cooling needs.

a heat pump with text 'let's talk heat pumps' , ETS logo

Imagine being able to control the temperature of your commercial building with a single device, regardless of the weather outside.

Imagine saving up to 50% on your heating and cooling costs, while reducing your carbon footprint and improving your indoor air quality.

Imagine having a reliable and versatile system that can adapt to different building types and sizes, and that can integrate with other renewable energy sources.

These are not just fantasies, they are realities with commercial heat pumps, a technology that is transforming the way we heat and cool our buildings.

Commercial heat pumps are not a new invention, but they have undergone significant improvements and innovations in recent years, making them more efficient, affordable, and compatible with different climates and applications.

In this blog, we will dive deeper into how commercial heat pumps work, indicators for repair or replacement, and what benefits they can offer to your business.

Whether you are looking to repair or replace your current heat pump, retrofit an existing building, or design a new one, commercial heat pumps can be a smart and sustainable choice for your heating and cooling needs.


a heat pump with text explaining what a heat pump is for anyone looking to learn more about heat pumps and heat pump repair

What is a Commercial Heat Pump?

Commercial heat pumps are advanced HVAC systems that can provide both heating and cooling solutions for large-scale buildings and facilities.

Working Principle

Commercial heat pumps use the principle of heat transfer to provide heating or cooling. They use a refrigerant, which is a fluid that changes state between liquid and gas, to absorb and release heat.

Depending on the mode of operation, the refrigerant cycles through four main components: evaporator coil, compressor, condenser coil, and expansion valve.

heat pump vapor-compression refrigeration cycle: condenser, expansion valve, evaporator, compressor
Heat pump's vapor-compression refrigeration cycle: 1) condenser, 2) expansion valve, 3) evaporator, 4) compressor

In heating mode

Refrigerant flows through the evaporator coil, where it absorbs heat from the outdoor air, water, or ground. The refrigerant then passes through the compressor, where it is pressurized and heated up.

The refrigerant then reaches the condenser coil, where it releases heat to the indoor air or water, providing heating.

Finally, the refrigerant goes through the expansion valve, where it reduces its pressure and temperature, and returns to the evaporator coil to repeat the cycle.

In cooling mode

Refrigerant cycles in the opposite direction. It flows through the expansion valve, where it lowers its pressure and temperature.

Then, it passes through the evaporator coil, where it absorbs heat from the indoor air or water, providing cooling.

Next, the refrigerant reaches the compressor, where it is pressurized and heated up.

Finally, the refrigerant flows through the condenser coil, where it releases heat to the outdoor air, water, or ground, and returns to the expansion valve to repeat the cycle.

They have four main components that are involved in the refrigerant cycles that enable the heat transfer process.

Key Components

Evaporator Coil

This is a heat exchanger that allows the refrigerant to absorb heat from the surrounding air or fluid. The refrigerant boils and evaporates at a low temperature and pressure, changing from liquid to gas.


This is a pump that increases the pressure and temperature of the refrigerant, facilitating the heat transfer process. The compressor also moves the refrigerant through the system.

Condenser Coil

This is another heat exchanger that allows the refrigerant to release heat to the surrounding air or fluid. The refrigerant condenses and liquefies at a high temperature and pressure, changing from gas to liquid.

Expansion Valve

This is a device that regulates the flow of refrigerant, controlling the temperature and pressure levels within the system. The expansion valve also creates a pressure difference between the evaporator coil and the condenser coil, which drives the refrigerant cycle.



heat pump types, air source heat pump, water source heat pump, ground source heat pump (geothermal heat pump), and hybrid heat pump, with an image of a vaporized heat pump (a type of air source heat pump)

Types of Commercial Heat Pumps

Commercial heat pumps can be classified into three main types, depending on the source and sink of heat they use: air-source, water-source, and ground-source (or geothermal) heat pumps.

Each type has its own advantages and disadvantages and requires different installation and maintenance procedures.

Here is a brief overview of each type and its suitability for different applications:

The most common and widely used type of commercial heat pumps.

How does it work?

Transfers heat between the outdoor air and the indoor air, using a fan to circulate the air through an outdoor unit and an indoor unit.

ASHPs can provide both heating and cooling, depending on the direction of the refrigerant cycle.

Examples of ASHPs include rooftop units, packaged terminal heat pumps, and variable refrigerant flow systems.


text 'modern heat pumps offer remarkable energy efficiency, potentially reducing consumption by around 65%' with background image of light bulb, ETS logo

ASHPs are relatively easy and cheap to install and can operate in a wide range of climates and temperatures.

Modern heat pumps offer remarkable energy efficiency, slashing heating electricity consumption by around 65% compared to traditional electric resistance heaters like furnaces and baseboard heaters.

High-efficiency models also excel in dehumidification, outperforming standard central air conditioners.


Their efficiency and performance can vary depending on the outdoor air conditions, and they may require backup or supplemental heating systems in extremely cold regions.

ASHPs can also be noisy and cause outdoor air pollution if not properly maintained.

Similar to ASHPs except that they use water instead of air as the heat source or sink.

How does it work?

Water-source heat pumps are often installed in buildings that have access to a large body of water, such as a lake, river, pond, or well.

WSHPs can also use water from cooling towers, boilers, or chillers, creating a closed-loop system that recycles the water within the building.

Examples of WSHPs include water loop heat pumps, water-to-air heat pumps, and water-to-water heat pumps.


They can offer higher efficiency and more stable performance than ASHPs, as water temperatures are less variable than air temperatures.


The down side is that they are more expensive and complex to install, and require careful water quality control and treatment to prevent corrosion, scaling, or biological growth.

They can also pose environmental risks if the water source or sink is contaminated or disturbed.

The most efficient and environmentally friendly type of commercial heat pumps.

How does it work?

They work by transferring heat between the ground and the indoor air, using pipes that are buried in the soil or submerged in a water well.

GSHPs can provide both heating and cooling, depending on the direction of the refrigerant cycle.

Examples of GSHPs include horizontal ground loop systems, vertical ground loop systems, and direct exchange systems.


GSHPs can operate at very high efficiencies, as the ground temperature is relatively constant and unaffected by weather changes.

They can also reduce greenhouse gas emissions and energy consumption, as they use renewable and free heat from the earth.


The most expensive and difficult to install and require specific geological and hydrological conditions to function properly.

GSHPs can also have some negative impacts on the ground thermal balance and groundwater quality if not properly designed and managed.

A type of commercial heat pump that combines two or more of the above types, or integrates with other renewable energy sources, to optimize the efficiency and performance of the system.

How does it work?

Hybrid heat pumps can use different heat sources or sinks depending on the season, the weather, or the demand, and can switch or blend them to achieve the best results.

They can also use solar panels, wind turbines, or biomass boilers to supplement or replace the conventional electricity or gas sources, reducing the environmental impact and the operating costs of the system.

Examples of an HHP include dual-source heat pumps, bivalent heat pumps, and solar-assisted heat pumps.


HHPs can offer more flexibility and reliability than single-type heat pumps, as they can adapt to changing conditions and needs.


More complicated and expensive to design, install, and maintain, and may require more space and equipment.

Commercial heat pumps can also be customized and configured to suit different building types and sizes, such as offices, hotels, schools, hospitals, or industrial facilities.

The choice of the best type of commercial heat pump for your business depends on several factors, such as your heating and cooling needs, your budget, your site conditions, and your environmental goals.

To learn more about how commercial heat pumps work and what benefits they can offer to your business, contact ETS today and get a free consultation and quote.


a picture of a scroll compressor, with text 'Heat Pump Technologies: Scroll Compressor, Two-Speed Compressors, Variable Speed Motors, Desuperheater, Dual-Fuel Systems, Cold Climate Heat Pumps'

Advanced Heat Pump Technologies

Innovations in heat pump technology have led to the development of advanced features that enhance efficiency, comfort, and versatility.

Here are some key advancements:

Two-Speed Compressors

Two-speed compressors allow heat pumps to operate at different capacities, adjusting output based on the heating or cooling demands of the space. This enhances energy efficiency by preventing frequent cycling and reducing energy consumption during periods of lower demand.

Variable-Speed or Dual-Speed Motors

Variable-speed or dual-speed motors provide precise control over airflow, allowing heat pumps to adjust speed based on heating or cooling needs. This results in quieter operation, improved comfort, and increased energy savings by minimizing energy usage during part-load conditions.


A desuperheater is a supplementary heat exchanger that utilizes excess heat from the refrigerant to heat water for domestic use, such as showers or faucets. This feature improves overall system efficiency by harnessing waste heat and reducing the need for additional water heating methods.

Scroll Compressor

Scroll compressors offer smoother and quieter operation compared to traditional reciprocating compressors. They are more reliable and efficient, contributing to overall system performance and longevity.

Dual-Fuel or Hybrid Systems

Dual-fuel or hybrid systems combine a heat pump with a backup heating source, such as a gas furnace or electric resistance heater. This configuration allows the system to switch between heating sources based on outdoor temperature conditions, optimizing efficiency and comfort.

Cold Climate Heat Pumps

Cold climate heat pumps are specifically designed to operate efficiently in low outdoor temperatures, making them suitable for regions with cold climates. These heat pumps utilize advanced refrigeration technology and enhanced insulation to maintain performance even in subfreezing conditions.

These advanced heat pump technologies offer increased efficiency, improved comfort, and greater flexibility, making them ideal choices for commercial and residential HVAC applications.


benefits of commercial heat pumps

Benefits of Commercial Heat Pumps

Commercial heat pumps offer a multitude of advantages for businesses and facilities seeking efficient heating and cooling solutions.

Here are some key benefits:

  1. Energy Efficiency: One of the primary advantages of commercial heat pumps is their high energy efficiency. By leveraging heat transfer processes rather than generating heat, they can achieve impressive energy savings compared to traditional heating and cooling systems. This can lead to significant reductions in utility costs for businesses, contributing to long-term savings and sustainability goals.

  2. Versatility: Commercial heat pumps provide both heating and cooling capabilities in a single system, offering versatility for various climate control needs. This flexibility makes them ideal for commercial buildings with fluctuating temperature requirements throughout the year, eliminating the need for separate heating and cooling systems and streamlining HVAC operations.

  3. Environmental Friendliness: Heat pumps are considered environmentally friendly HVAC solutions due to their low carbon footprint. By utilizing renewable heat sources such as outdoor air, water, or the ground, they reduce reliance on fossil fuels and minimize greenhouse gas emissions. This aligns with sustainability initiatives and corporate responsibility efforts, positioning businesses as environmentally conscious entities.

  4. Consistent Comfort: Commercial heat pumps deliver consistent indoor comfort by maintaining stable temperatures year-round. Whether heating in the winter or cooling in the summer, they ensure a comfortable and productive environment for occupants, enhancing employee satisfaction, and customer experience in commercial spaces such as offices, retail stores, and hospitality venues.

  5. Quiet Operation: Compared to traditional HVAC systems like furnaces and air conditioners, commercial heat pumps typically operate more quietly, creating a quieter indoor environment for occupants. This can be particularly advantageous in noise-sensitive settings such as offices, schools, and healthcare facilities, where noise reduction is essential for maintaining a peaceful atmosphere.

  6. Long Lifespan: When properly maintained, commercial heat pumps have a long operational lifespan, providing reliable heating and cooling performance for many years. This longevity translates to reduced lifecycle costs for businesses, as they require fewer replacements and repairs over time, resulting in improved return on investment and lower total cost of ownership.

  7. Zoning Capabilities: Many commercial heat pump systems offer zoning capabilities, allowing businesses to divide their facilities into distinct zones with independent temperature controls. This enables more precise climate control and energy management, optimizing comfort levels while minimizing energy consumption in areas with varying occupancy and usage patterns.

Overall, the benefits of commercial heat pumps make them a compelling choice for businesses seeking cost-effective, environmentally friendly, and versatile HVAC solutions for their facilities.


signs you may need heat pump repair or heat pump replacement

Signs You May Need Heat Pump Repair or Replacement

Like any mechanical system, commercial heat pumps can experience wear and tear over time, leading to performance issues or malfunctions.

Recognizing the signs that indicate the need for repair or replacement can help businesses address problems promptly and avoid costly disruptions.

Here are common signs to watch for:

  1. Inadequate Heating or Cooling: If your commercial space consistently feels too hot or too cold despite adjustments to the thermostat, it could indicate a problem with your heat pump's heating or cooling capabilities. This may result from issues such as refrigerant leaks, compressor failure, or air duct obstructions.

  2. Decreased Energy Efficiency: A sudden increase in energy bills without a corresponding increase in usage could signal reduced energy efficiency in your heat pump system. This may result from worn-out components, refrigerant leaks, or inefficient operation due to improper maintenance or aging equipment.

  3. Unusual Noises: Strange sounds such as grinding, rattling, or banging noises coming from your heat pump indicate potential mechanical problems. These noises could stem from loose or damaged components, worn-out bearings, or compressor issues, requiring immediate attention to prevent further damage.

  4. Frequent Cycling On and Off: If your heat pump frequently cycles on and off, known as short cycling, it may indicate issues with the system's controls, thermostat, or compressor. Short cycling not only compromises comfort but also reduces energy efficiency and increases wear and tear on the equipment.

  5. Poor Air Quality: A decline in indoor air quality, such as excessive dust, musty odors, or uneven airflow, could signify issues with your heat pump's filtration system or air distribution. Poor air quality not only affects occupant comfort but also poses health risks and may indicate the need for repairs or upgrades to the system.

  6. Ice Buildup or Frost: Ice accumulation on the outdoor unit or frost on the indoor coils indicates potential problems with your heat pump's refrigerant levels, airflow, or defrost cycle. Ignoring ice buildup can lead to system damage and reduced efficiency, necessitating professional inspection and repair.

  7. Age of the System: Commercial heat pumps typically have a lifespan of 10 to 15 years with proper maintenance. If your heat pump is nearing the end of its expected lifespan or experiencing frequent breakdowns, it may be more cost-effective to invest in a replacement rather than continuing to repair an aging system.

  8. Persistent Issues: If you've experienced multiple repairs or ongoing problems with your heat pump despite professional servicing, it may be a sign that the system is nearing the end of its usable life. In such cases, investing in a new, more reliable heat pump can provide long-term benefits and peace of mind.

By being vigilant for these signs and promptly addressing any issues with your commercial heat pump, you can ensure uninterrupted comfort, energy efficiency, and productivity in your commercial space.

Consultation with a licensed HVAC technician can help diagnose problems accurately and determine whether repair or replacement is the best course of action based on the condition of your heat pump system.


heat pump installation costs and considerations

Heat Pump Installation and Cost Considerations

Installing a commercial heat pump involves careful planning and consideration of various factors to ensure optimal performance and cost-effectiveness.

Here's what businesses need to know about installation and the associated costs:

  1. Site Assessment: Before installing a commercial heat pump, it's essential to conduct a thorough site assessment to evaluate factors such as building size, layout, insulation, and existing HVAC infrastructure. This assessment helps determine the most suitable type and capacity of the heat pump for the facility's heating and cooling needs.

  2. Professional Installation: Experienced professionals can ensure proper sizing, placement, and configuration of the heat pump to maximize efficiency and performance while complying with building codes and regulations.

  3. Equipment Costs: The cost of a commercial heat pump varies depending on factors such as capacity, efficiency ratings, brand, and features. Higher-capacity units or those with advanced features like variable-speed compressors may command higher upfront costs but can deliver greater energy savings and comfort benefits over time.

  4. Installation Expenses: In addition to the cost of the heat pump itself, businesses should budget for installation expenses, which may include labor costs, equipment rental, permits, and any necessary modifications to the building's HVAC infrastructure. The complexity of the installation, such as accessibility and site conditions, can also influence installation costs.

  5. Operating Costs: While commercial heat pumps offer energy-efficient heating and cooling, businesses should consider the long-term operating costs associated with running the system. Factors such as electricity rates, maintenance requirements, and seasonal energy efficiency should be considered when assessing the overall cost of ownership.

  6. Return on Investment (ROI): Despite the initial investment required for purchasing and installing a commercial heat pump, businesses can achieve a favorable ROI through energy savings, reduced maintenance expenses, and improved comfort and productivity. Calculating the payback period and potential savings can help justify the upfront costs of installing a heat pump.

  7. Financing Options: To mitigate the upfront costs of installing a commercial heat pump, businesses may explore financing options such as equipment leasing, loans, or incentives and rebates offered by utility companies or government agencies for energy-efficient upgrades. These financial incentives can help offset the initial investment and accelerate the ROI for businesses.

By carefully considering installation and cost factors, businesses can make informed decisions about selecting and installing a commercial heat pump that meets their heating and cooling requirements while maximizing energy efficiency and cost savings over the system's lifecycle.


10 commercial heat pump repair solutions

10 Commercial Heat Pump Repair Solutions

  1. Refrigerant Leak Detection and Repair: Utilize specialized equipment to detect and seal refrigerant leaks, ensuring optimal performance and efficiency.

  2. Compressor Replacement: Address issues with malfunctioning compressors by replacing damaged or worn components to restore proper function.

  3. Evaporator Coil Cleaning: Thoroughly clean evaporator coils to remove dirt, debris, and buildup, enhancing heat transfer and efficiency.

  4. Condenser Coil Maintenance: Perform regular maintenance on condenser coils to prevent overheating and maintain efficient heat exchange.

  5. Electrical Component Inspection and Repair: Inspect electrical connections, relays, and controls for signs of wear or damage, repairing or replacing components as needed to ensure safe operation.

  6. Thermostat Calibration: Calibrate thermostats to accurately control temperature settings and optimize energy efficiency.

  7. Fan Motor Replacement: Replace faulty fan motors to ensure proper airflow and heat exchange within the system.

  8. Expansion Valve Adjustment: Adjust expansion valves to regulate refrigerant flow and optimize system performance.

  9. Filter Replacement: Regularly replace air filters to maintain indoor air quality and prevent airflow restrictions.

  10. System Tune-Up: Conduct comprehensive system tune-ups, including inspection, cleaning, and adjustment of components, to maximize efficiency and longevity.


new trends in heat pumps, with image of a futuristic hvac system on a building

New Trends in Commercial Heat Pumps

As technology advances and sustainability becomes increasingly important, the commercial HVAC industry continues to evolve, bringing forth innovative trends in heat pump technology. These trends aim to enhance energy efficiency, improve performance, and reduce environmental impact in commercial heating and cooling systems.

Here are some noteworthy trends shaping the future of commercial heat pumps:

Smart HVAC Controls

Integrating smart controls and building automation systems allows for more precise monitoring and control of commercial heat pumps. Smart thermostats, sensors, and predictive analytics enable proactive maintenance, optimized energy usage, and remote management, enhancing system efficiency and reducing operational costs.

Variable-Speed Compressors

Traditional heat pumps operate at fixed speeds, leading to energy wastage during periods of low demand. Variable-speed compressors adjust their output based on real-time heating and cooling needs, resulting in significant energy savings and improved comfort levels in commercial spaces. This technology also extends the lifespan of the equipment by reducing stress on components.

Heat Pump Hybrids

Heat pump hybrid systems combine the benefits of heat pumps with supplemental heating sources, such as natural gas or electric resistance heaters. These hybrid systems automatically switch between heat pump and auxiliary heating modes based on outdoor conditions and energy costs, optimizing efficiency and comfort while providing backup heating during extreme weather conditions.

Enhanced Refrigerants

The HVAC industry is transitioning towards environmentally friendly refrigerants with lower global warming potential (GWP) and ozone depletion potential (ODP) to comply with regulatory standards and reduce environmental impact. Next-generation refrigerants, such as R-32 and R-454B, offer improved efficiency and performance while minimizing environmental harm.

Geothermal Heat Pumps

Geothermal heat pumps utilize the stable temperature of the earth to provide efficient heating and cooling for commercial buildings. By circulating fluid through underground loops, geothermal systems harness renewable energy, offering consistent performance and minimal environmental impact. Advancements in drilling technology and system design have made geothermal heat pumps more accessible and cost-effective for commercial applications.

Modular Heat Pump Systems

Modular heat pump systems consist of multiple smaller units that can be combined to meet the heating and cooling demands of varying-sized commercial spaces. These systems offer scalability, redundancy, and flexibility, allowing businesses to customize their HVAC solutions according to their specific needs and budget constraints.

Heat Pump Water Heaters

Commercial heat pump water heaters use heat pump technology to efficiently heat water for various applications, including space heating, domestic hot water, and industrial processes. These systems offer significant energy savings compared to conventional water heaters, making them an attractive option for commercial buildings seeking to reduce operating costs and carbon emissions.

Heat recovery ventilation systems capture waste heat from exhaust air and transfer it to incoming fresh air, improving energy efficiency and indoor air quality in commercial buildings. HRV systems reduce the need for additional heating and cooling by pre-conditioning incoming air, resulting in lower energy bills and enhanced occupant comfort.

By embracing these emerging trends in commercial heat pump technology, businesses can achieve greater energy efficiency, reduce operating costs, and contribute to a more sustainable future.



In the dynamic landscape of commercial HVAC systems, heat pumps stand out as versatile and efficient solutions for maintaining comfortable indoor environments while reducing energy consumption and environmental impact.

From their ability to harness renewable energy sources to their integration with smart controls and variable-speed compressors, heat pumps continue to evolve to meet the evolving needs of commercial buildings.

As businesses strive to enhance sustainability, improve indoor air quality, and optimize energy usage, investing in advanced commercial heat pump systems becomes increasingly vital.

By staying abreast of new trends, embracing innovative technologies, and partnering with experienced HVAC professionals, businesses can unlock the full potential of heat pump technology to create healthier, more efficient, and more comfortable commercial spaces for employees, customers, and occupants alike.

If you have more questions about heat pumps, dont hesitate to contact us through the ETS website or by clicking the banner below.

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Commercial Heat Pump FAQs

What is a commercial heat pump, and how does it work?

A commercial heat pump is an HVAC system that transfers heat between indoor and outdoor environments using refrigerant cycles. It extracts heat from the air, water, or ground and transfers it to provide heating or cooling.

What are the benefits of installing a commercial heat pump?

Commercial heat pumps offer energy-efficient heating and cooling, reduced electricity usage, improved indoor air quality, and versatility in operation for commercial spaces.

What types of commercial heat pumps are available?

Common types include air-source heat pumps, ground-source (geothermal) heat pumps, water-source heat pumps, hybrid heat pumps, and ductless mini-split systems.

How do I know if my commercial heat pump needs repair or replacement?

Signs include decreased heating or cooling performance, strange noises, unusual odors, increased energy bills, frequent cycling on and off, and visible leaks or damage.

What maintenance tasks should I perform to keep my commercial heat pump running smoothly?

Regular tasks include cleaning or replacing air filters, cleaning coils, checking refrigerant levels, inspecting electrical components, and scheduling professional tune-ups.

Can a commercial heat pump be used in all climates?

Yes, although performance may vary depending on the type of heat pump and the climate. Some heat pumps are designed for colder climates and can operate efficiently in sub-freezing temperatures.

What factors should I consider when choosing a commercial heat pump for my business?

Consider factors such as the size and layout of the space, climate conditions, energy efficiency ratings, available incentives or rebates, and budget constraints.

Are there incentives or rebates available for installing a commercial heat pump?

Many utility companies and government agencies offer incentives, rebates, or tax credits for installing energy-efficient heat pump systems, helping offset the initial investment costs.

How long can I expect a commercial heat pump to last?

With proper maintenance, commercial heat pumps can last between 10 to 20 years, depending on usage, environmental conditions, and the quality of installation.

Can I retrofit my existing commercial HVAC system with a heat pump?

In many cases, existing HVAC systems can be retrofitted with heat pump technology to improve energy efficiency and reduce operating costs. However, it's best to consult with a professional HVAC contractor to assess feasibility and compatibility.


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