Business Details
50+ Years
experience
Emergency
services
Expert HVAC Services in Enfield, CT
Miller Oil Company has been a trusted provider of heating, cooling, and fuel delivery services since 1939, serving the greater Enfield, Connecticut community. Founded by Alexander S. Miller and now operated by fourth-generation family members Charles H. Miller and Douglas J. Miller, the company combines decades of industry experience with a commitment to quality service. Our team of NATE-certified technicians specializes in HVAC repairs, installations, and maintenance for residential and commercial properties, utilizing state-of-the-art equipment and weather-tracking technology for automatic fuel delivery.We offer comprehensive service contracts, budget-friendly payment plans, and 24/7 emergency support to ensure year-round comfort. With a focus on customer education and energy efficiency, we provide tailored solutions that reduce consumption by up to 40% while maintaining environmental responsibility. Our dedication to excellence has earned us a 4.9-star rating from 87 local reviews, reflecting our unwavering commitment to reliability, transparency, and community service.
Services
HVAC Repair
Fuel Delivery
System Installation
Preventative Maintenance
Emergency Service
Details
- Year established: 1939
Highlights and features
- Four generations of family expertise since 1939
- NATE-certified technicians with specialized HVAC training
- 24/7 emergency repair services available
- Gold, Silver, and Bronze service contracts for equipment protection
- Automatic fuel delivery with weather-tracking technology
Associations and certifications
- NATE
What people say
Fast emergency service
Professional technicians
Competitive pricing
Reliable automatic delivery
Energy-saving advice
Services
HVAC Repair
Our NATE-certified technicians provide rapid HVAC repairs for furnaces, boilers, and air conditioning systems. We service all fuel types including oil, gas, propane, and electric systems. Emergency repairs are available 24/7 with upfront pricing and no hidden fees. Our trucks carry replacement parts for most major brands to ensure same-day fixes.
Fuel Delivery
We deliver heating oil, diesel, and kerosene with automatic delivery options using weather-tracking software. Our fleet ensures timely deliveries regardless of weather conditions. Price protection programs and budget plans help manage seasonal fuel costs for residential and commercial customers across Hartford and Tolland counties.
System Installation
Our experts install high-efficiency HVAC systems including Viessmann boilers, Weil-McLain equipment, and Mitsubishi ductless systems. We perform load analyses to determine optimal system sizing and offer free estimates. Financing options and manufacturer warranties ensure long-term reliability and energy savings for new or replacement installations.
Preventative Maintenance
Annual tune-ups extend equipment lifespan and improve efficiency by up to 40%. Our service includes burner cleaning, thermostat calibration, and safety inspections. Gold, Silver, and Bronze service contracts provide varying levels of parts and labor coverage with guaranteed annual maintenance visits.
Emergency Service
We offer round-the-clock emergency HVAC repairs with no overtime charges. Our rapid response team handles critical heating failures and AC breakdowns during extreme weather. Same-day service calls include diagnostic assessments and transparent repair estimates to restore comfort immediately.
People
Charles H. Miller
Owner
Fourth-generation leader with 30+ years in HVAC management. Oversees daily operations while maintaining family commitment to quality service.
Douglas J. Miller
Owner
Active in business strategy and customer relations. Brings modern expertise to complement family tradition in heating and cooling solutions.
Questions
What HVAC services do you offer?
We provide repairs, installations, and maintenance for furnaces, boilers, air conditioning systems, and ductless heating/cooling units.
Do you offer emergency HVAC service?
Yes, our 24/7 emergency service responds to critical heating and cooling failures with no overtime charges.
Which areas do you service?
We serve Enfield, Suffield, Windsor, East Granby, Somers, and surrounding Connecticut communities within 60 miles of our office.
What payment methods are accepted?
We accept checks, major credit cards, and offer budget payment plans for regular customers.
Do you provide service contracts?
Yes, we offer Gold, Silver, and Bronze service contracts with varying levels of parts and labor coverage.
How does automatic fuel delivery work?
Our weather-tracking software monitors your usage patterns to schedule deliveries before you run low on heating oil.
Videos
Reviews (5)
Als
Nov 06, 2019
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We just had our 31 year old boiler replaced by Miller Oil. Doug came out and gave a very reasonable estimate. Very obvious that he knew what he was doing. Didn't try to sell any unnecessary equipment. Scheduling was fast. The three man crew that installed was very professional and knowledgeable. We will definitely be using Miller Oil for our maintenance and oil needs.
Mike Stephens
Oct 25, 2019
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Positive:Punctuality,Quality,Responsiveness,Value
A great local company with very competitive prices and excellent service. They are always friendly and helpful. I would highly recommend Miller Oil.
A great local company with very competitive prices and excellent service. They are always friendly and helpful. I would highly recommend Miller Oil.
John Lewandoski
Dec 16, 2018
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Great job done by Doug Miller and his crew from Miller Oil! Would highly recommend them. Fast, efficient, timely and thorough! They removed our ancient boiler system and installed our Viessman boiler and indirect tank in just under 4 hours! Very reasonable cost for the high quality of our new system. Thanks again!
Joanne Mason
Sep 14, 2018
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Superior and Courteous Service
I contacted Miller Oil Co. Monday morning at 8:O0am because our furnace was leaking water and we had no hot water. Russ arrived within the hour and quickly diagnosed the problem and replaced the necessary parts to get our system operational again.
I contacted Miller Oil Co. Monday morning at 8:O0am because our furnace was leaking water and we had no hot water. Russ arrived within the hour and quickly diagnosed the problem and replaced the necessary parts to get our system operational again.
Jonathan Fournier
Aug 25, 2016
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Installed gas furnace and ac for me. Excellent work and service. The guys who did it were great. Shirley Jensen not Jonathan my grandson
