Sigma Tremblay

Business Details

50+ Years

experience

Emergency

services

Your Trusted Partner for HVAC Solutions in Wappingers Falls

Sigma Tremblay brings over 50 years of combined experience in residential and light commercial HVAC services to Wappingers Falls and the Hudson Valley. Founded in 1968 as Sigma Environmental Systems and merged with Tremblay and Company in 2002, we combine decades of expertise with Carrier-certified equipment to deliver energy-efficient heating, cooling, and indoor air quality solutions. Our BPI-certified technicians handle repairs, maintenance, and installations for all HVAC systems, including radiant floor heating, heat pumps, and ductless HVAC. We prioritize customer satisfaction through 24/7 emergency service, NYSERDA financing options, and comprehensive maintenance plans. Licensed across multiple counties, we serve Dutchess, Ulster, Putnam, and Orange Counties with workmans compensation and liability insurance coverage for every project.

Our teams commitment to quality craftsmanship and transparent communication has earned us thousands of satisfied customers and industry recognition. We partner with NYSERDA to provide cost-effective energy-saving solutions and specialize in oil-to-gas conversions and commercial HVAC systems. From initial consultation to post-installation support, we ensure every client receives personalized attention and reliable service. Our reputation for punctuality, professionalism, and thorough cleanup reflects our core belief that customer trust directly drives our success. With a legacy of merging tradition and innovation, Sigma Tremblay remains the Hudson Valleys premier choice for HVAC excellence.

Services

AC Repair Heating Installation Ductless HVAC Commercial HVAC Oil to Gas Conversion Heat Pumps Indoor Air Quality Maintenance Plans Energy Audits Tankless Water Heaters

Details

Year established: 1968

Highlights and features

We offer 50+ years of combined HVAC expertise in the Hudson Valley
Our team includes BPI-certified technicians for energy-efficient solutions
We provide 24/7 emergency service with guaranteed response times
NYSERDA financing options make energy-saving upgrades accessible
Carrier-certified installations ensure premium equipment performance

Associations and certifications

Building Performance Institute (BPI)

What people say

Excellent installation job Friendliest I have ever come across Highest level of workmanship Knowledgeable and respectful crew Outstanding service and warm home

Website

Update Listing

Services

AC Repair

Our BPI-certified technicians provide prompt AC repair services for residential and commercial properties. We diagnose and fix cooling system issues including compressor failures, refrigerant leaks, and thermostat malfunctions. With 24/7 emergency availability, we restore comfort quickly using genuine Carrier parts and advanced diagnostic tools.

Heating Installation

We specialize in high-efficiency heating system installations including furnaces, boilers, and radiant floor heating. Our experts assess property needs to recommend optimal solutions with AFUE ratings up to 98.5%. All installations comply with local codes and include comprehensive warranties for long-term reliability and energy savings.

Ductless HVAC

Sigma Tremblay offers Carrier ductless HVAC solutions for homes without existing ductwork. Our zoned systems allow precise temperature control in specific rooms. Installation includes optimal placement of indoor heads and outdoor units, with energy-efficient models reducing utility bills by up to 30% compared to traditional systems.

Commercial HVAC

We maintain and repair light commercial HVAC systems for offices, retail spaces, and industrial facilities. Services include rooftop unit maintenance, ductwork optimization, and energy audits. Our team addresses issues like uneven temperatures, humidity control, and system inefficiencies to minimize business disruptions.

Oil to Gas Conversion

Our specialists handle complete oil-to-natural-gas conversions including line installation, furnace replacement, and system certification. We coordinate with utility providers and offer NYSERDA financing to offset conversion costs. The process improves heating efficiency while eliminating oil storage and delivery concerns for Hudson Valley properties.

Questions

What HVAC services does Sigma-Tremblay offer?

We provide AC repair, heating installation, ductless systems, commercial HVAC services, oil-to-gas conversions, and indoor air quality solutions in the Hudson Valley.

Do you offer emergency HVAC services?

Yes, our 24/7 emergency service responds promptly to heating and cooling crises across Wappingers Falls and surrounding areas.

Are financing options available?

We offer low-interest NYSERDA financing for energy-efficient HVAC upgrades to qualified customers in New York State.

What service areas do you cover?

We serve Dutchess, Ulster, Putnam, and Orange Counties including Wappingers Falls, Poughkeepsie, Newburgh, and Beacon, NY.

How can I schedule HVAC maintenance?

Call (845) 210-6535 or use our online request form to schedule maintenance or receive a free system evaluation.

Reviews (4)

Write a Review

Tony C.

Jul 07, 2020 Report

Purchased an A/C from them in 2009 with an extended warranty that covers all labor and parts. Had a leak in the air exchange unit after 8 years and they refuse to honor the warranty. I had to paid all the labor charge because they claimed that the service person didn't directly work for them. Recently, I had another problem and they said I needed to replace the compressor for $6,000. It didn't sound right and I called a local HVAC person who fixed it for under $300.

Kevin M.

Feb 25, 2020 Report

A good friend of mine used to work for this company, so knowing this Sigma-trembly was the first call I made when I wanted a price for my home AC to he serviced. To my suprise, when I spoke with them on the phone they wanted to charge me for an estimate! (And it was not cheap!) I was so taken back. "So in order to give an estimate on the job you charge a fee?" I asked, to which they replied along the lines of, "when you hire us we will credit you the estimate charge back".

Get out of here, I have never EVER paid for a job estimate. A smart home owner gets at least 3 estimates for large jobs, none of which I was ever charged for. Although I knew the company was capable of doing good work I decided not to go with them, and went with another company who came out, explained the services needed and provided a quote for the job (without a fee!). No thank you Sigma, I'm not shelling out money for an estimate.

Staci C.

Jul 26, 2019 Report

Sigma-Tremblay installed a carrier a/c unit for us 22 years ago and it's been keeping us cool ever since until 2 days ago. After my husband exhausted all possibilities, I had to call for service. The technician, Troy, was here within a few hours of my call and within 15 mins had the unit running again. He was professional, knowledgeable and very courteous and the charge was reasonable. Definitely deserves the 5 stars.

Ron C.

Jun 04, 2019 Report

Sigma-Tremblay installed a central air conditioning unit in my house. John explained our options and quoted 3 different systems. We ended up with a Bosch heat pump. They installers got in done in one (long) day. They were polite and professional. The system works as promised (so far). They also processed the paperwork for a rebate from Central Hudson. I recommend and would use again.