Heating, Air Conditioning, Fridge, HVAC/2 stage air conditioning


I know the difference between the stages and the benefits, but would I be able to tell once it is installed?  I had a 2 stage installed 3 months ago, but have never heard it run at more than 1 speed.  It cools everything just fine, but I don't want to pay for a 2 stage if I'm only getting 1 stage performance.  Live in the northeast, plenty of 90+ days, I would have expected to "hear" the 2 stages.

Donald ,

You should ask all your questions to the installing Contractor as there should be at least a one year labor warranty ,quite possible your unit is oversized for your residents. Did they do a load calculation on your house or just swap out same size as old one ( if you had a A/C unit )  if you lowered your thermostat many degree below room temperature does your 2nd stage come on. Was the system set up correctly, does your blower motor ramp up or run at different speeds or is it constant. You should ask the installing Contractor the sequence of operation under different temperature ranges from your t-stat set point. How does your system work when the room temperature is 2 degree away from your t-stat set point compared to being 7 degree away. Ask them to explain it to you

Heating, Air Conditioning, Fridge, HVAC

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40+ years diversified experience.An HVAC/Refrigeration Self Employed Contractor since 1986. NATE Certifield. Answer questions pertaining to Residential and Commercial Air Conditioning , Warm Air Heating, Heat Pump systems.Mechanical and Electrical troubleshooting of these systems.Be as detailed as possible when describing problem.Packaged unit or split systems.No appliance questions.


Installation and Troubleshooting, Mechanical and Electrical, in following areas, Refrigeration ( Walk In and Reach In Coolers and Freezers ) Commercial Roof Top and Packaged Heating/Cooling ( Natural Gas,Propane, Electric, and Heat Pumps ) Computer Room Air Conditoning Systems,Commercial Residential Packaged and Split Systems Air Conditoning and Heat Pumps.Warm Air Oil , Natural and Propane Gas Heating systems.

Graduated from Private Technical School in 1975. An HVAC/Refrigeration Contractor . Have Unlimited Heating/Piping and Cooling Contractor License.Limited Sheetmetal Contractors License.NATE Certifield. York Certifield Master Heat Pump Technician 1986. Served 33 years combination Active Duty Air Force , Air Force Reserves and Air National Guard in the HVAC/Refrigeration Shop/Mechanical Shop. Troubleshooting/Installing HVAC/Refrigeration Equiptment Worldwide. Retiring in 2003 as a Senior NCO ,and a Mechanical Superintendent.

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