HVAC contractor in Wethersfield

Keeping your home warm during the Wethersfield winter does not have to be a hassle. Mull Bros Inc. offers automatic and on-demand heating oil deliveries directly to your oil tank — with no minimum order limits. We monitor your usage and schedule deliveries before you run low, so you never have to worry about a cold house or an emergency fuel run.

Our fixed-price oil program locks in your rate per gallon for the season, protecting you from market spikes. For those who prefer more control, we also offer will-call delivery when you simply let us know you are ready. Every delivery is handled by our professional drivers using clean, modern trucks to ensure safety and efficiency. Whether you are a new homeowner or have relied on oil heat for years, switching to Mull Bros is easy. Call us to enroll in automatic delivery and enjoy one less thing on your to-do list. We serve residential properties throughout Wethersfield and surrounding communities, always with a smile and transparent pricing.

Is your furnace making strange noises or struggling to keep up with the cold? The HVAC experts at Mull Bros Inc. diagnose and repair all makes and models of oil, gas, and electric heating systems. We do not just patch problems — we find the root cause and fix it right the first time, saving you money on future breakdowns.

If your heating system is more than 15 years old or your energy bills keep climbing, it might be time for a replacement. We help you choose the right high-efficiency furnace or boiler for your home and budget. Our team handles everything from removing the old unit to testing the new system for peak performance. We also specialize in converting oil furnaces to natural gas, helping you take advantage of cleaner fuel and potential utility incentives. All work is backed by our labor warranty and manufacturer guarantees. When you need dependable heating service in Wethersfield, call Mull Bros — we answer the phone 24/7 for emergencies.

Nothing beats walking into a cool, dry home on the hottest day of the Wethersfield summer. Mull Bros Inc. provides complete central air conditioning services, including new system installation, repairs, maintenance, and ductless mini-split options for homes without existing ducts. We have experience with every major brand — Trane, Carrier, Lennox, Goodman, and more — so you never have to worry about overpriced “dealer-only” technicians.

Not sure if your AC is working efficiently? Our preventative maintenance plans include a thorough inspection, coil cleaning, refrigerant check, and filter replacement to keep your system running at peak performance. If your air conditioner is blowing warm air, short-cycling, or not turning on at all, our diagnostic experts can usually identify the issue within minutes. For new construction or replacement projects, we help you select the right SEER rating and capacity for maximum comfort and energy savings. All installations are completed with minimal disruption to your daily life. Stay cool the smart way — with Mull Bros professional AC service in Wethersfield.