How long does a furnace last?

A well-maintained oil or propane furnace typically lasts 15-20 years. Skipping annual maintenance can shorten that significantly.

What size furnace do I need?

Sizing depends on your home's square footage, insulation, layout, and climate. We perform a Manual J load calculation rather than guessing — undersized systems leave you cold, oversized systems short-cycle and wear out early.

What brands do you install?

We work with ThermoPride, Williamson, Boyertown, and most other major brands. We'll recommend the right one based on your home, fuel, and budget.

Should I switch from a furnace to a heat pump?

It depends. Modern cold-climate heat pumps work well in CT and qualify for rebates, but they pair best with backup heat for the coldest stretches. We'll lay out the math honestly.

HEATING · FURNACES

Furnaces that last.

Expert furnace repair, installation, and maintenance for homes across Fairfield and New Haven Counties.

Phil says: Furnaces are picky about sizing. Wrong size, short life. We get it right.

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IN PLAIN ENGLISH

A furnace heats air and pushes it through your ductwork. We install, repair, and tune up oil and propane furnaces — including ThermoPride, Williamson, and Boyertown equipment — sized and commissioned to manufacturer specification.

Key takeaways

Oil and propane warm-air furnaces installed, repaired, and tuned up
Sized with a load calculation, not by copying the old nameplate
Ductwork inspected so a new furnace isn't fighting an undersized return
Serving Fairfield County and New Haven County, Connecticut

OVERVIEW

Built around how your home uses propane.

A furnace warms air and distributes it through your home's ductwork — a system called forced warm-air distribution. We install and service equipment from leading manufacturers, including ThermoPride, Williamson, and Boyertown. Proper installation is critical to efficiency and lifespan, and we follow manufacturer specifications.

WHAT TO EXPECT

Propane delivery, handled.

Oil-fired & propane furnaces
ThermoPride, Williamson, Boyertown
Annual cleanings & tune-ups
24/7 emergency repair for maintenance-plan members
Full furnace replacement
Variable-speed & high-efficiency models

LEARN MORE

More about this service

Why proper furnace installation matters

A furnace is only as good as its installation. Even the best equipment will fail early if it's the wrong size, vented incorrectly, or set up with poor airflow. Our installs cover:

Correct sizingbased on a real load calculation, not a rule of thumb
Optimal placementfor airflow, access, and serviceability
Proper ventingand combustion-air supply
Sealed and balanced ductworkfor consistent room-to-room temperature
Commissioningmeasured airflow, temperature rise, and combustion analysis before we leave

Common furnace problems we fix

Won't ignitebad igniter, dirty flame sensor, gas-valve issue
Short-cyclingoversized unit, dirty filter, or bad limit switch
Blower won't shut offfan limit control problem
Loud or unusual noisesbad bearings, loose blower wheel, cracked heat exchanger
Yellow flame or sootcombustion problem; needs immediate attention

Annual furnace tune-ups

Every furnace benefits from a yearly tune-up: cleaning the burner, inspecting the heat exchanger, replacing the filter, testing safety controls, and verifying combustion. Preventive care helps identify wear before the heating season puts the system under its heaviest load.

FAQ

Frequently asked questions

How long does a furnace last?: A well-maintained oil or propane furnace typically lasts 15-20 years. Skipping annual maintenance can shorten that significantly.
What size furnace do I need?: Sizing depends on your home's square footage, insulation, layout, and climate. We perform a Manual J load calculation rather than guessing — undersized systems leave you cold, oversized systems short-cycle and wear out early.
What brands do you install?: We work with ThermoPride, Williamson, Boyertown, and most other major brands. We'll recommend the right one based on your home, fuel, and budget.
Should I switch from a furnace to a heat pump?: It depends. Modern cold-climate heat pumps work well in CT and qualify for rebates, but they pair best with backup heat for the coldest stretches. We'll lay out the math honestly.

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Your next step starts here.

Heating Service

Get expert repair, maintenance, and replacement support for your home’s heating system.

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Heating Installation

Furnace and boiler installation for Connecticut homes.

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Heating Tune-Ups

Annual cleaning and safety checks before the cold hits.

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Tell us what you’re considering. We’ll help you understand your options and provide clear pricing with no pressure or obligation.

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Heating Oil Delivery

See how Levco keeps your home supplied with dependable automatic delivery, flexible pricing options, and local support.

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Propane Delivery

Learn about reliable propane delivery and service for heating, hot water, cooking, generators, and more.

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Furnace acting up? Get a quote.

Talk with a local Levco team member about fuel, service, or equipment for your home.

REQUEST A QUOTE (203) 533-8249