Open 24/7 Same rate nights, weekends & holidays No overtime fees 4.6 on Google · 282 reviews Call or text (240) 969-4911
Furnace Installation in Leesburg, VA

Based in Leesburg, VA

4.6 from 282 Google reviews

Furnace Installation in Leesburg, VA

Furnace Installation in Leesburg, VA: licensed, factory-certified technicians serving Loudoun County with 24/7 availability and no overtime fees.

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gas furnace installation work, professional service in Leesburg, VA

Leesburg Furnace Installation, Sized and Done Right

Furnace installation in Leesburg is one of the core services we handle at Brick Street Plumbing Heat & Air, and we do it for homes across Loudoun County every season. If your furnace is over 15 years old, running up your Dominion Energy bill, or just not heating the house the way it used to, a new system is probably the smarter call. Our licensed and factory-certified technicians size the equipment to your home, pull the required Northern Virginia permits, and handle the full installation start to finish. Call (240) 969-4911 any time, day or night, and there's no overtime charge for the call.

A furnace installation in a Loudoun County home typically involves removing the old unit, inspecting and testing the existing ductwork, installing the new furnace to manufacturer spec, and commissioning the system before we leave. Cost depends on the fuel type (gas versus electric), the efficiency rating you choose, the size of the home, ductwork condition, and whether the flue or venting needs to be upgraded. High-efficiency gas furnaces with AFUE ratings of 96% or above carry a higher upfront cost but meaningfully reduce monthly heating bills over a Northern Virginia winter, which is exactly why they're the most common choice in Loudoun County subdivisions built in the last decade. We won't push you toward a system you don't need. Every job is different, so contact Brick Street Plumbing Heat & Air for an accurate estimate.

Furnace Options

Gas, Electric, or High-Efficiency: Which System Fits Your Home

The right furnace depends on your fuel source, home size, and what you want to spend each month on heating.

Gas Furnace Installation

Natural gas is the dominant heating fuel in Leesburg and most of Loudoun County. Gas furnaces heat faster and cost less to run per BTU than electric in most winters. AFUE ratings range from 80% to 98.5%. Homes with existing gas lines are straightforward to upgrade.

Electric Furnace Installation

Electric furnaces have no flue requirement and lower upfront installation cost. They're a practical choice for homes without a gas line or for smaller square footage. Operating costs run higher than gas in most Northern Virginia winters, so sizing and insulation matter more.

High-Efficiency Upgrade

A 96% or higher AFUE furnace can cut heating costs noticeably compared to a standard 80% unit. The payback period is shorter in homes that run heat heavily from November through March. We'll walk you through the numbers for your specific home before you commit.

Variable-Speed vs. Single-Stage

Single-stage furnaces run at full capacity or off. Two-stage and variable-speed units modulate output, which means steadier temperatures, quieter operation, and less wear on the system over time. Variable-speed is generally worth the cost in homes over 2,000 square feet.

Our Process

How a Furnace Installation Works

  1. Assessment and Sizing

    We calculate the correct BTU load for your home using square footage, insulation, window count, and local climate data. An oversized furnace short-cycles and wears out early. An undersized one runs constantly and still can't keep up on a cold January night.

  2. Removal, Permits, and Install

    We pull the required Northern Virginia building permit, remove the old unit, inspect the ductwork and flue, and install the new furnace to manufacturer spec. Factory-certified technicians handle the gas line or electrical connections, and we verify every joint and connection before moving on.

  3. Commissioning and Walkthrough

    Once the system is installed, we run a full startup sequence, check airflow at every register, test the thermostat, and confirm the heat exchanger is intact. We explain the filter schedule, the manufacturer warranty, and what to watch for in the first few weeks.

Repair vs. Replace

When to Replace Your Furnace Instead of Repairing It

The honest answer is that repair almost always costs less in the short term. But if your furnace is 16 years or older, has had two or more major repairs in the last three years, or your heating bills have climbed without any obvious cause, replacement is usually the smarter financial move over a five-year horizon. A cracked heat exchanger is a hard stop: we won't patch one, because carbon monoxide risk is not something to negotiate around. If we diagnose that during an HVAC repair visit, we'll tell you plainly and give you options. We won't recommend a full replacement when a repair is the right call, but we also won't let you keep running a system that's unsafe. If you're on the fence, ask us to walk through the numbers with you before you decide.
electric furnace installation work, professional service in Leesburg, VA

Furnace Installation Questions from Loudoun County Homeowners

How long does a furnace installation take?
Most residential furnace replacements take four to eight hours from arrival to commissioning. Straightforward swaps in newer homes with accessible equipment rooms run closer to four. Jobs that involve ductwork modifications, flue liner replacement, or gas line upgrades run longer. We give you a realistic time window before we start, not after.
What AFUE rating makes sense for a Leesburg home?
Loudoun County winters average about 4,500 heating degree days annually, which is enough to make a 96%+ AFUE unit financially worthwhile over a standard 80% model, especially with current Dominion Energy rates. The payback period is typically five to eight years on the energy savings alone. Homes with poor insulation or air sealing get less benefit, so we factor that in before making a recommendation.
Do I need to replace my ductwork when I install a new furnace?
Not always. We inspect the existing ductwork during every installation and test for leaks. Older Loudoun County homes, particularly colonials built before 1990, often have duct leakage rates of 20 to 30 percent, which undermines the efficiency of even a top-tier new furnace. If replacement or sealing makes financial sense, we'll explain why and what it costs. If the ducts are serviceable, we'll say so.
What size furnace does my home need?
Furnace size is calculated from a Manual J load calculation, not from the size of the old unit. We account for square footage, ceiling height, insulation levels, window area, and air infiltration. A furnace that's 20 to 30 percent oversized will short-cycle, which increases wear and humidity issues. We don't skip this step.
Will a new furnace installation require a permit in Leesburg?
Yes. Loudoun County requires a mechanical permit for furnace replacement, and the work must be inspected. We handle the permit application as part of the job. Any contractor who offers to skip the permit is putting you in a position where your homeowner's insurance may not cover a future claim and where resale becomes complicated. We pull the permit every time.
How does hard water and humidity in Northern Virginia affect a new furnace?
High-efficiency condensing furnaces produce acidic condensate that must drain properly. In areas with hard water like much of Loudoun County, the condensate drain can accumulate mineral deposits over time and back up if it's not maintained. We install drain lines with the slope and access needed to clean them, and we include a condensate maintenance note in the commissioning walkthrough.
How long does a furnace installation take in Leesburg?
Most residential furnace replacements take four to eight hours from arrival to commissioning. Straightforward swaps in newer homes with accessible equipment rooms run closer to four. Jobs that involve ductwork modifications, flue liner replacement, or gas line upgrades run longer. We give you a realistic time window before we start, not after.
What size furnace do I need for my home?
Furnace size comes from a Manual J load calculation, not from the size of the old unit. We account for square footage, ceiling height, insulation levels, window area, and air infiltration. A furnace that's 20 to 30 percent oversized will short-cycle, increasing wear and humidity problems. We don't skip this step or guess based on square footage alone.
Is a permit required for furnace installation in Loudoun County?
Yes. Loudoun County requires a mechanical permit for furnace replacement, and the completed work must be inspected. We handle the permit application as part of the job. Any contractor who offers to skip the permit is leaving you exposed: homeowner's insurance may not cover a future claim, and resale can become complicated without a record of inspected work.
When should I replace my furnace instead of repairing it?
If your furnace is 16 or more years old, has had two major repairs in the last three years, or your heating bills have climbed without a clear explanation, replacement is usually the better financial decision over five years. A cracked heat exchanger is a non-negotiable replacement scenario because of carbon monoxide risk. We'll walk you through the numbers so you can make the call with full information.

Why 282 Loudoun County Homeowners Call Brick Street

What Brick Street brings to every furnace installation in Leesburg.

Licensed and factory-certified technicians
Not generalists. Our team holds dual HVAC certifications and factory credentials from the manufacturers we install.
24/7 availability, no overtime fees
A midnight call costs the same as a Tuesday morning appointment. No surprise charges on the invoice.
Permits pulled on every job
Loudoun County mechanical permits are part of the installation, not an optional add-on.
4.6 stars across 282 Google reviews
Real Loudoun County homeowners. The number is verified, not rounded.

Furnace Installation Across Loudoun County

We install furnaces throughout Leesburg and the surrounding communities. If you're in Loudoun County, we can get there.

In the field

A look at our work

high efficiency upgrade work, professional service in Leesburg, VA
variable speed vs single stage work, professional service in Leesburg, VA

Ready to Replace Your Furnace?

Call Brick Street Plumbing Heat & Air at (240) 969-4911. We're available 24/7 across Loudoun County, and there's no overtime fee whenever you call.

Our licensed technicians will size the right system for your home, pull the permits, and handle the full installation. You can also reach us at tim.brickstreet@gmail.com if you'd prefer to schedule by email and we'll get back to you fast.

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(240) 969-4911

Based in Leesburg, VA.

4.6 from 282 Google reviews
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