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    • Home
    • Services
      • Air Conditioning
      • Ductless HVAC
      • Oil to Gas Conversions
      • Heat Pumps
      • Heating
      • Indoor Air Quality
      • Water Heaters
      • Smart Thermostat
    • Maintenance Plans
    • Special Offers
    • Contact Us
    • Financing and Rebates
    • About
      • About
      • FAQs
    • Reviews
    • Service Areas
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  • Home
  • Services
    • Air Conditioning
    • Ductless HVAC
    • Oil to Gas Conversions
    • Heat Pumps
    • Heating
    • Indoor Air Quality
    • Water Heaters
    • Smart Thermostat
  • Maintenance Plans
  • Special Offers
  • Contact Us
  • Financing and Rebates
  • About
    • About
    • FAQs
  • Reviews
  • Service Areas

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HVAC Contractor FAQs

Get in Touch

Please reach us if you cannot find an answer to your question.

Here at A & S Nathan Heating & Cooling LLC, we service and install all types of equipment you may have. Our list includes, but is not limited to:

  • Oil
  • Natural gas
  • Propane
  • Electric
  • Heat pump
  • Heat pump water heaters
  • Water heaters
  • On-demand water heaters
  • Combination boilers
  • Ductless mini splits
  • Boilers
  • Furnaces
  • High-efficiency furnaces
  • Steam boilers


There are a few basic things you, as a customer, should check before calling in for a service call.

  • Are all your electrical breakers in the on position?
  • Are both service switches in the on position? (typically one on piece of equipment and one at the top of the stairs.)
  • Is your thermostat screen working and showing any data? (if it's blank, check batteries)
  • Is your thermostat set to the desired mode? (heat/cool)
  • Is the thermostat set above or below the room temperature?

If all these basic steps are checked, you are in the proper positions and set points, and you still have an issue, don’t panic! Pick up the phone and give us a call. We will have an experienced technician out to your house in no time to get you back up and running!


Yes! Here at A & S Nathan Heating & Cooling LLC, we offer free installation estimates for any type of equipment installation or replacement. Free repair estimates cannot be given, as we have to diagnose the problem(s) first.


We accept all major credit cards, personal checks, and cash.


Every year, your system should be checked, tested, and adjusted by a qualified technician to ensure peak performance and prevent costly breakdowns.


With over 20 years in business, A & S Nathan Heating & Cooling LLC has developed a huge network of suppliers and can track down warranty products from almost any manufacturer.


Yes! A & S Nathan Heating & Cooling LLC can install your smart or Wi-Fi thermostat for you. We have experienced technicians trained with all of the top brands of smart thermostats.


No! There are new ways around having a common wire in most cases. However, we do prefer getting a common wire to the thermostat when it’s possible to avoid any complications down the road.


Yes, financing is readily available for almost all projects. Just give our office a call, and we can walk you through the process and find the best option for you!


Yes, A & S Nathan Heating & Cooling LLC can handle everything for you to install a complete custom air conditioning system in your home. Just give our office a call to schedule your free estimate!


Contact Us

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Service Areas within New Haven & Fairfield County

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A&S Nathan Heating & Cooling LLC

34 Clifton Avenue, Ansonia, Connecticut 06401, United States

203-735-5332 admin@nathanheating.com

Hours: 24/7

24 Hour Emergency Service Available 7 Days a Week

LIC # HTG.0403943-S1

LIC # HTG.0411885-S1

LIC # HTG.0412275-S1


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SPRING SPECIAL

Schedule your AC Tune-up today and save! 


$149 AC Tune Up per Unit (Reg. $179)

(Service must be booked by 6/15/25)



Click here to book your appointment Online now!