A commercial or industrial furnace is a larger-capacity heating unit designed for big spaces such as warehouses, offices, plants, and commercial buildings—not single-family homes.

Unlike residential furnaces, commercial units:

• Are built to run longer hours and handle higher heating loads

• Tie into larger duct networks, makeup-air systems, or rooftop units

• Use staged or modulating burners, building automation, and advanced controls

• Must meet stricter safety, ventilation, and building code requirements

Most commercial furnaces should be serviced once per year, and twice per year in heavy-use or mission-critical facilities. Fall and spring maintenance helps catch wear early, ensure safe combustion, and maintain efficiency. Facilities that run 24/7—such as healthcare, production, and data centers—often require quarterly maintenance.

A furnace may need repair if you notice changes in comfort or performance.

Common warning signs include:

• Uneven temperatures or insufficient heating

• Rising utility bills

• Rattling, booming, or grinding noises

• Short-cycling

• Burnt or unusual odors

• Frequent lockouts, error codes, or resets

Early attention and service helps prevent major failures.

Most commercial furnaces last 15–25 years with proper installation and routine maintenance.

Shorter life spans occur when:

• The unit is improperly sized

• Filters and burners are neglected

• The system runs in dirty, corrosive, or poorly ventilated spaces

If your furnace is in the 15–20 year range and repairs are increasing, replacement planning is recommended.

A properly sized furnace should maintain temperature without running nonstop or short-cycling.

Correct sizing depends on:

• Heat-loss calculations

• Building type and occupancy

• Ventilation and makeup-air needs

• Ductwork design and zoning strategy

If the furnace struggles during mild weather or cycles rapidly, a design review may be needed.

Yes. Gas-fired commercial furnaces remain a strong option where natural gas is cost-effective and forced-air systems already exist. They provide fast warm-up and high supply-air temperatures. Heat pumps, boilers, or hybrid systems may be better depending on energy costs, load profiles, and sustainability goals.

You can often improve commercial furnace efficiency without replacing the entire unit.

Common upgrades include:

• Routine maintenance: cleaning burners, heat exchangers, and verifying combustion

• High-efficiency filters chosen for both air quality and static pressure

• Variable-speed fans or VFDs on supply and return fans

• Better controls and scheduling through a building automation system

• Duct and envelope improvements to reduce heat loss and leakage

A commercial energy audit or tune-up can identify which upgrades deliver the best payback.

A standard commercial furnace maintenance visit includes:

• Inspecting burners, heat exchangers, and venting

• Cleaning combustion components

• Checking belts, motors, and fans

• Measuring temperature rise and gas pressure

• Verifying filter condition

• Testing controls, safeties, and BAS connections

You’ll receive a brief report outlining any recommended repairs.

Most single-unit replacements take 1–2 days, depending on access, crane requirements, and utility tie-ins. Larger or multi-unit projects may require off-hour work, temporary heat, or coordination with inspectors. A well-planned replacement minimizes operational disruption.

Engineered Temperature Solutions services most commercial warm-air heating systems in Central Ohio, including gas furnaces, gas-heat sections on rooftop units, unit heaters, makeup-air units, and packaged HVAC systems. ETS also supports equipment connected to building automation platforms for coordinated operation.

Yes. ETS provides fast emergency furnace service for Columbus, Pataskala, and nearby areas. Our technicians prioritize no-heat and safety calls, diagnose most equipment in one visit, stabilize urgent issues when needed, and provide clear recommendations for repair or replacement.