Onofreo Home Comfort Systems LLC

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About Onofreo Home Comfort Systems LLC
Onofreo Home Comfort Systems LLC has served Milford homeowners since establishing their HVAC contracting practice in the region. The company holds proper Connecticut licensing for residential heating and cooling system installations, and maintains an exceptional 4.9-star average across 509 verified customer reviews. Based in Milford, the contractor extends service to surrounding Fairfield County communities, including nearby Shelton and Orange, providing both emergency repairs and scheduled system upgrades for single-family homes and rental properties.
This contractor distinguishes itself through manufacturer-backed installation warranties that exceed industry norms. Customer reviews note a 2-year workmanship warranty, whereas most competing contractors in the region offer only 12-month coverage. The team handles aging system replacements including 34-35 year old boilers and furnaces, transitioning homes from oil to natural gas or installing modern combi-boiler systems. Mini-split heat pump installations and multi-zone system upgrades represent core specializations, with technicians experienced in adding zones to existing forced-air setups. Commercial property service rounds out the offering, with one reviewer citing ongoing support for their business location.
Customer narratives reveal hands-on problem solving that saved homeowners significant expense. When Marissa Carbone's furnace was diagnosed with a crack by another company, Onofreo technicians identified a faulty part instead and completed the repair on-site. Mark Bishop's installation required removal of a 250-gallon decommissioned oil tank alongside his boiler replacement, a scope handled in a single project. Elizabeth Carriero's mini-split installation was completed within one scheduled appointment, with crews noted for cleanup and respect for the homeowner's surroundings.
What Customers Say
All six posted reviews carry 5-star ratings, with three explicitly praising diagnostic accuracy that prevented unnecessary replacements. Two reviews highlight the 2-year warranty as a decision factor, while one commercial client notes recurring service for ongoing needs. None of the available reviews express dissatisfaction with pricing, workmanship, or communication.
Working Hours
| Sunday | Closed |
| Monday | 8:30 AM–4:30 PM |
| Tuesday | 8:30 AM–4:30 PM |
| Wednesday | 8:30 AM–4:30 PM |
| ThursdayToday | 8:30 AM–4:30 PM |
| Friday | 8:30 AM–4:30 PM |
| Saturday | Closed |
Services
Boiler Replacement & Conversion
Upgrades from aging oil or natural gas boilers to modern combi-boiler systems, including multi-zone configuration.
Furnace Installation
Replacement of older units with high-efficiency gas furnaces, backed by a 2-year installation warranty.
Mini-Split Heat Pump Installation
Ductless mini-split systems for targeted heating and cooling in home additions or specific zones.
HVAC Repair & Diagnostics
Identifying system failures with accurate diagnostics, repairing specific faulty components rather than recommending full replacements.
Annual HVAC Maintenance
Scheduled maintenance programs for furnace and cooling systems to extend equipment lifespan.
Commercial HVAC Service
Ongoing heating and cooling support for commercial properties and business locations.
Oil Tank Removal
Decommissioning and removal of old oil heating tanks during system conversions.