Business Details
Emergency
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Expert HVAC Installation & Repair in Milford, CT
Onofreo Home Comfort Systems has been a trusted provider of comprehensive HVAC solutions across Connecticut for over two decades. Our factory-trained technicians specialize in heating, air conditioning, and indoor air quality services, offering installation, repair, and maintenance tailored to residential and light commercial needs. As a Bryant Factory Authorized Dealer and Mitsubishi Diamond Dealer, we combine advanced technology with meticulous craftsmanship, including an in-house sheet metal shop for custom ductwork fabrication.Our commitment to excellence is reflected in our 5-star reputation, NATE-certified team, and proactive approach to customer education. We prioritize transparent communication, free estimates, and 24/7 emergency service, ensuring long-term system efficiency and client satisfaction. With deep expertise in geothermal systems, oil-to-gas conversions, and energy-efficient innovations, we deliver sustainable comfort solutions while maintaining rigorous industry standards.
Services
Air Conditioning Installation
Heating Repair
Indoor Air Quality
Ductless HVAC
Geothermal Systems
Heat Pump Maintenance
Oil to Gas Conversion
Commercial HVAC
System Maintenance
Emergency Repairs
Highlights and features
- Factory-trained technicians certified in latest HVAC technologies
- 24/7 emergency service with rapid response times
- Custom ductwork fabrication ensures optimal airflow efficiency
- Free system evaluations and transparent pricing
- Specialized expertise in geothermal and oil-to-gas conversions
Associations and certifications
- Bryant Factory Authorized Dealer
- Mitsubishi Diamond Dealer
- NATE-certified
What people say
Professional team
Prompt service
Excellent workmanship
Clear communication
Energy savings
Services
Air Conditioning Installation
We provide comprehensive air conditioning installation services featuring energy-efficient units from leading manufacturers. Our technicians perform precise load calculations to ensure optimal system sizing while handling permit acquisition and old unit removal. Customers benefit from reduced utility bills, improved temperature control, and access to manufacturer rebates through our industry partnerships.
Geothermal HVAC
Our geothermal system installations utilize underground thermal energy for sustainable heating and cooling. With expertise in loop field design and heat pump integration, we deliver systems that reduce energy consumption by up to 70% while providing consistent indoor comfort throughout the year.
Oil to Gas Conversion
We specialize in complete oil-to-gas conversion projects featuring modern high-efficiency boilers and furnaces. Our process includes system design, permitting, and safe removal of oil tanks while ensuring minimal disruption to home heating during transition periods.
Indoor Air Quality
Our indoor air quality solutions address humidity control, particulate removal, and odor elimination through whole-house purification systems. Certified technicians install and maintain equipment that reduces allergens and improves respiratory health in residential environments.
Emergency HVAC Repair
Available round-the-clock for urgent HVAC failures, our certified technicians respond promptly with fully equipped service vehicles. We prioritize system restoration while providing clear diagnostics and repair options to prevent future emergencies.
People
Mark Onofreo
Owner
With over 20 years in HVAC, Mark leads operations ensuring technical excellence and customer satisfaction. He oversees system design and project execution while maintaining hands-on client consultation.
Kelly
Office Manager
Managing client relations for 15+ years, Kelly coordinates scheduling and financing options while providing technical support during complex installations and rebate processes.
Anthony
Senior Technician
Certified HVAC specialist with 12 years' experience, Anthony handles complex repairs and system diagnostics. Known for thorough explanations and meticulous attention to detail during service calls.
Shane
Sales Consultant
HVAC solutions expert Shane provides personalized system recommendations. He specializes in energy-efficient upgrades and coordinates multi-phase installation projects for residential clients.
Jason
Lead Installer
Master installer with expertise in hydro-air systems and ductless configurations. Jason ensures precise equipment placement and maintains clean workspaces throughout multi-day projects.
Questions
What HVAC services do you offer?
We provide full-service HVAC solutions including installation, repair, and maintenance for heating, cooling, and indoor air quality systems in residential and light commercial settings.
Are you available for emergencies?
Yes, our 24/7 emergency service responds promptly to urgent HVAC failures with certified technicians on call throughout the shoreline region.
Do you service all HVAC brands?
Our NATE-certified technicians maintain and repair all major HVAC brands while specializing in Bryant and Mitsubishi equipment as authorized dealers.
What financing options exist?
We offer Energize CT loan programs and manufacturer rebates for qualifying HVAC upgrades, with assistance navigating application processes for approved customers.
Can you handle geothermal installations?
Yes, we're experts in geothermal system design and installation, including loop field configuration and integration with existing heating/cooling infrastructure for maximum efficiency.
What areas do you serve?
We serve Milford and the Connecticut shoreline from Rhode Island to New York, including Trumbull, West Haven, Orange, and Stratford.
Reviews (5)
James Chiavelli
Dec 27, 2021
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We could not be happier with the work done by Brandon, Levi and Rich. Our 5-zone ductless system was quite complex and it was handled beautifully. The crew was totally professional and worked so neatly that when they were finished we hardly knew they had been here.
Services:Installation,Ductless heating and AC services
Services:Installation,Ductless heating and AC services
Kathy Harrigan
Dec 17, 2021
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I wish I could give more than 5 stars! Onofreo Home Systems came to our rescue when our heat stopped working. They had a tech out within an hour on a Saturday. The team was able to replace our system with an affordable unit. The office personal was friendly, the service people were prompt and followed all safety protocols. When we had questions, the owner called us directly. The entire team is very knowledgeable and I would highly recommend them to family and friends. Thank you Mark and team for the great work!
August West
Nov 23, 2021
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Kelly and Shana could not be nicer or do enough to assist a new customer get an urgent appointment. Our situation involved a small gas leak of the furnace. Jeff Lane arrived on time, was the most professional and thorough a technician that we have ever dealt with. He Found the source of a very small leak and assisted us with a repair.Then he found that our old furnace was heading toward a more serious problem in the near future.
we are now going to hire Onofreo to replace that old furnace . Jeff provided a very reasonable price for the work and the team said it would be just a coupe of weeks until
we are now going to hire Onofreo to replace that old furnace . Jeff provided a very reasonable price for the work and the team said it would be just a coupe of weeks until
Caitlin Augusta
Sep 28, 2021
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Onofreo installed a new central AC unit and air handler for me this summer. I got several quotes, and I chose Onofreo because they 1. were honest about what I needed and really advised against a complicated system! 2. gave me a couple of options and agreed with me about which brands were reliable and which might be overpriced (naming no names!) 3. gave me a fair (not cheap but reasonable!) price 4. were prompt with their estimate and could do the job the soonest 5. are certified installers (this is important for having your warranty certified by the AC unit manufacturers - as I read everywhere
John Scalessa
Aug 29, 2021
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Onofreo is an amazing company That is represented by excellent products and professional staff. When I first called them they were extremely responsive to my needs and took care of the initial concerns that I had with an old air conditioning system. They got the old system up and running and put together an extremely comprehensive and thoroughly thought out recommendation for a new air-conditioning and heating system including new thermostats. We excepted their recommendations and had the new AC and heating system installed in a little over one day. The technicians came on time and worked with
