Furnace Installation in Medway, MA

Your Furnace Died. We'll Fix That.

Professional gas furnace installation that keeps your family warm all winter long.

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New Furnace Installation Medway

Reliable Heat When You Need It

Your old furnace picked the worst possible time to quit. Now you’re dealing with a cold house, stressed family, and the headache of finding someone who actually knows what they’re doing.

Here’s what changes when we install your new furnace. You wake up to consistent warmth throughout your home. Your heating bills drop because modern systems run efficiently instead of burning money. You stop worrying about breakdowns during the next polar vortex.

The difference between a good installation and a rushed one shows up in your monthly bills and how long your system lasts. We size your furnace correctly, install it right the first time, and make sure everything works before we leave.

Medway Furnace Installer

We Know Norfolk County Heating

Dempsey Energy has been handling furnace installations across Medway and Norfolk County for years. We understand how New England winters test heating systems and what it takes to keep homes comfortable.

Our team installs furnaces the right way because we’re the ones you’ll call if something goes wrong. We’re not disappearing after the job – we’re your local heating company with over 12,000 customers who trust us with their comfort.

You’ll work with licensed technicians who know gas furnace installation inside and out. We handle the permits, the inspections, and all the details that matter for a safe, efficient installation.

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Furnace Installation Process

Here's How We Handle Your Installation

First, we assess your home’s heating needs and existing setup. This isn’t a quick glance – we calculate the right size furnace for your square footage, insulation, and layout. Getting this wrong means you’ll have hot and cold spots or a system that cycles on and off constantly.

Next, we remove your old furnace and prepare the installation area. We protect your floors, handle all the disconnections safely, and dispose of the old unit properly. If we need to modify gas lines or electrical connections, we take care of that too.

Then we install your new furnace, connect all systems, and test everything thoroughly. We check gas pressure, airflow, safety controls, and thermostat operation. You’ll see exactly how your new system works and what to expect for maintenance.

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Gas Furnace Installation Services

What's Included in Your Installation

Your furnace installation covers everything needed for a complete, working system. We handle permits and inspections, so you don’t need to deal with town offices or worry about code compliance.

We install the furnace, connect gas lines, wire electrical components, and integrate with your existing ductwork. If your ducts need modifications or your electrical panel requires updates, we coordinate those changes as part of the project.

You get manufacturer warranty coverage on your new furnace plus our installation warranty. We also explain your new system’s operation and connect you with our Dempsey Comfort Club for ongoing maintenance and priority service.

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Most furnace installations take 4-8 hours, depending on your home’s setup and whether we need to modify gas lines or electrical connections. Straightforward replacements where the new furnace connects to existing systems typically finish in half a day. More complex installations involving ductwork changes, electrical panel upgrades, or gas line modifications can extend into a full day. We’ll give you a realistic timeline during our initial assessment so you can plan accordingly.
Furnace sizing depends on your home’s square footage, insulation levels, window efficiency, and ceiling height. Most Medway homes built in the 1960s-1980s need 80,000-120,000 BTU furnaces, but newer or well-insulated homes often require less. We perform a proper load calculation instead of just matching your old furnace size, because many existing systems are oversized. An oversized furnace cycles on and off frequently, wasting energy and creating uneven temperatures throughout your home.
Yes, Medway requires permits for furnace installations, and we handle all permit applications and inspections as part of our service. The town inspector needs to verify proper gas connections, electrical work, and ventilation before your installation is complete. We schedule inspections at the right times during installation so there are no delays. Skipping permits might save money upfront, but it creates problems when you sell your home or file insurance claims.
New furnaces operate at 90-98% efficiency compared to 60-80% for systems installed 15-20 years ago. This means 90-98% of the gas you pay for actually heats your home instead of going up the chimney. For a typical Medway home spending $1,200 annually on heating, upgrading from a 70% efficient furnace to a 95% efficient model saves about $300-400 per year. The savings add up quickly, especially with natural gas price fluctuations we see in Massachusetts.
Your new furnace comes with manufacturer warranty coverage, typically 10-20 years on parts and heat exchanger. We also warranty our installation work, so if something goes wrong due to our installation, we fix it at no charge. As a Dempsey Comfort Club member, you get priority service scheduling and discounted repairs if needed. We maintain detailed records of your installation and system specifications, so any future service calls are handled efficiently by technicians who understand your specific setup.
Yes, we can convert your home from oil to gas heat, but it requires additional work beyond a standard furnace installation. We need to run new gas lines from the street connection to your furnace location, install gas meters and shutoff valves, and possibly modify your chimney venting system. The conversion also involves removing your oil tank and cleaning up any spills. We coordinate with National Grid for gas service connection and handle all permits for the conversion work.