T&H Mechanical Systems
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T&H Mechanical Systems
T&H Mechanical Systems is a family owned and operated company with extensive experience in the heating and cooling industry. We deal with the top brands in HVAC so we can make sure you have a quality heater, air conditioner, indoor air quality system, or water heater that is the right fit for your home.

We also provide same-day service for repairs and can offer you comprehensive maintenance services as well. If you live in the Stamford, CT area, you don't have to look far to find top-notch heating and air conditioning services. Our friendly and skilled technicians are ready to help. Our air conditioning and heating specialists have training on residential heating and cooling systems, water heaters, and light commercial HVAC systems.
Services
T&H Mechanical Systems understands what you want from your air conditioning service company: Reliability, honest pricing, and courteous service. As a Norwalk, CT HVAC and family business that has been serving the Connecticut and New York metropolitan areas for over 25 years, we are prepared to provide the outstanding workmanship and service you are seeking.
The people who work, live, or conduct business on your commercial property expect a certain level of comfort. If you cannot provide an environment that makes everyone feel welcome, productivity could suffer and clientele may be unwilling to return. The commercial HVAC system on your property helps things run smoothly but you need professionals to service it if you expect continued performance that meets your expectations.
Here in Stamford, homeowners tend to focus on temperature to maintain their comfort level - and with good reason. Our muggy summers and freezing winters demand a top-notch heating and air conditioning system. But they aren't the only components important to keeping your home healthy and comfortable.
We will make your service as simple and affordable as possible without cutting corners or trying to sell our way to profit when we get there. You can count on that from us. If unit is equipped with a condensate pump, please test operation, test safety switch & clean pump if needed. Cycle the unit & take temperatures of the suction line entering the outdoor unit & record on customers work order.
T&H Mechanical Systems is proud to be the comfortable choice for families and business owners throughout many parts of Connecticut and New York. For years, we have provided our clients with the highest quality of workmanship and service, helping them stay comfortable all year long.

Extreme temperatures are no match for our NATE-certified technicians - with the skill and experience needed to install and maintain any type of heating or cooling system, we can be trusted to improve your comfort.No matter where you are located, if you live within our service area you can expect professional and reliable repairs, installations, and maintenance services.
Reviews (6)
Michael Rosato
Michael Rosato
Nov 05, 2019
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At the beginning of this summer, the unit I bought last year from Harold was not doing its job. Took a few times to figure out what was going wrong. Harold came out three times to fix it at no charge. Excellent prompt service. He made it right and did it with a smile.
Marybeth Darcy
Marybeth Darcy
Jun 16, 2019
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Always responsive, honest, on time and fixes it the first time. I will never hesitate to refer friends to Harold and his team
Matt Ellis
Matt Ellis
Jun 24, 2018
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They converted our oil boiler to gas and gave a good price. They were professional and kept to the schedule. Over the last couple of years we have had issues with the boiler we chose. Harold has personally dealt with the company, making sure the warranty was adhered to and eventually pushed for a brand new boiler, which we received. They then offered to fit the new boiler for free, even though the fault was with the boiler itself, which they did. They stood by their work, were always out immediately when needed and have given a great service over the last couple of years.
James Casey
James Casey
May 24, 2017
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This was my best experience with a contractor in our new home. Harold the owner was very good at walking the system explaining to me what he was looking at so I learned the system as a new owner. He found the issue, not only fixed that, he fixed a couple other small items. The entire time explaining to me what he was doing so I could look after the system unless there was a major issue. I was not clear how much I would be charged above and beyond the fee to come out. He charged me for the one hour with no add on charges or fees. We plan on living here for a long time and T & H Mechanical have earned
Ken Benson
Ken Benson
May 10, 2017
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Beware!!! Harold and Joe are deceitful and negligent! I am currently having a horrible experience. 9 Months ago Harold sold me a "whole new system"(2.5 ton) for $6500 complete. He did not tell me it would not include parts as directed by Carrier for a proper installation.
In the winter, the heater did not work and he made excuses to charge me $1,100 (originally billed $1,800, yet quoted by Harold $700 prior to work) for putting another air return hole in my office wall because there was a air restriction and when complete it still did not work. Turns out he installed too small an air opening in
Kim F.
Kim F.
Aug 07, 2014
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I can't say enough good things about Harrold and his company; but I will name a few! 1) The first good sign was when I called for a quote and he called me back the same day!
2) He was extremely flexible with my crazy work schedule by completing the work over two days. He thought creatively so I didn't need to wait for air conditioning and suffer in this heat.
3) When my boyfriend and I needed to pay for the unit, Harrold opened 1/2 hour early to accommodate the early train my bf needed to catch.

These are all great reasons....but the best part was the education he gave me about