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furnaces & air conditioning

COH is proud to be an installer of Keeprite Furnaces. The most common system we offer is a two stage furnace in ordr to give you the greatest savings. We also install Keeprite air conditioners, which allows us to help you with a complete a residential gas install.

Natural Gas Furnaces



Direct Hot Surface Ignition System features an advanced silicon nitride igniter for years of reliable starts.


The RPJ® III primary heat exchanger is made of corrosion-resistant weld-free stainless steel. The unique integrated ripple-edged design forces more heat to the outside surface area for higher efficiencies.

Heating On Demand

Two-stage redundant gas valve, two-speed induced draft blower assembly, and variable speed motor operate normally at the lower stage and ramp up as needed.


Variable speed circulation blower motor is pre-lubricated, dynamically balanced, and resilient mounted to reduce vibration and noise.

System Monitoring

State-of-the-art electronic controls monitor system operation and allow for advanced diagnostics, a timesaving tool for technicians.

Air Conditioning

air conditioning


The Copeland® scroll compressor operates without noisy pistons and comes with a deluxe sound blanket to reduce compressor sound levels. Two-stage operation means it runs mostly in the lower, quieter stage and switches to the higher stage in higher temperatures for more cooling.


The galvanized steel cabinet features a coated inlet grille with narrower spacing to provide maximum protection as it allows for proper airflow and easy coil cleaning.


The scroll compressor and the 7 mm copper tubing with aluminum fin coils work collectively to save on energy.

Smooth Operation

The two-speed fan motor operates most of the time on quieter, lower speed. Aerodynamic air discharge design reduces operating sounds. Matching with variable speed indoor fan allows whisper-quiet indoor operation.

Service Friendly

The Comfort Alert II system has all of the standard comfort alert features. Plus, it can alert homeowners to call for service before a problem develops by working with an optional Comfort Alert II compatible thermostat.

92% EFF R410-A energystar





Premium G
PremiumG from GeoSmart. The most efficient geothermal unit on the planet!
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up to $7000 in ecoENERGY grants for geothermal retrofits.
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