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"We had Nick from City Furnance redesign our heating system. We live in an older home that had 2 old furnaces and because of changing safety code we needed to go to one furnace. This was not an easy fix but Nick handled this tough job with ease. This was accomplished in a timely fashion for a very fair price with exceptional workmanship. I would highly recommend City Furnace to handle any size of job with professional care. I myself work in construction and appreciate Nick's hard work and him showing up when scheduled."  - Jason Weber 


Heating Efficiency

AFUE stands for Annual Fuel Utilization Efficiency and is a percentage measurement of the furnace’s heating efficiency. The U.S. government's minimum efficiency level is 78% and the Canadian minimum is 90%, but Armstrong Air furnaces go all the way up to 97%. That means 97 cents of every dollar goes to efficient heating.

HSPF stands for Heating Seasonal Performance Factor and is a measurement of a heat pump’s heating efficiency. There is no governmental minimum efficiency level for HSPF.

Cooling Efficiencies

SEER stands for Seasonal Energy Efficiency Ratio and is a measurement of the efficiency of cooling products. The U.S. government’s minimum efficiency level is 13.0, but Armstrong Air cooling products exceed 18.0 SEER.

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City Furnace Replacement carries a full range of products
for your home including: 
  • Armstrong Air Furnaces
  • Armstrong Air A/C Coils & Condensors
  • Rheem Hot Water Heaters
  • Generalaire Humidifiers & Filter Products
  • Ecco Supply Ventilation and Sheet Metal Products
  • Reznor Unit Heaters
  • Lifebreath HRV
  • Energy Saving Products, Hi-Velocity Equipment
  • Roberts Gordon Radiant heaters
  • Honeywell Thermostats and Controls



    From high-efficiency gas valves and two-stage heating to our patented EHX™ Technology, Armstrong Air gas furnaces use advanced designs to bring more to every home.

    Click on model numbers below to download brochure:


    Armstrong Air's most advanced furnaces deliver the highest number of features, the most comfort and the greatest efficiency.

    A97MV  A96MV  A952V  A802V


    For the perfect balance between performance and value, look to Armstrong Air furnaces with constant torque motors. 

    A951E  A801E


    Armstrong Air’s single-stage furnaces keep your energy use smart and your home comfortable.

    A951S  A951A  A931A  A801A


    Air Conditioners

    Inside Armstrong Air air conditioners, you’ll find a wealth of smart ideas including efficiency-boosting MHT™ Technology, swept-wing fan blades and advanced sound reduction.
    Two-Stage Performance

    With two different cooling output speeds, these exceptional performers offer the ideal balance between smart energy use and serious comfort.

    4SCU18LT  4SCU16LT

    Single-Stage Performance

    Enjoy consistent, reliable cooling and a home full of refreshing air.

    4SCU14LE  4SCU13LE  4AC13L 

    R22 System Component 

    Designed to work with existing furnaces and air handlers using R22 refrigerant.