Water Heater Installation in Fairfax
Tank Water Heater Installation & Replacement for Fairfax Homeowners
When your water heater fails or it’s time for a replacement, you need someone who knows the job and can get it done the same day. Long's Corporation has been serving Northern Virginia homeowners since 1936, and our licensed master plumbers are hands-on with every water heater installation we complete in Fairfax.
This page covers standard tank water heater installation and replacement. Our technicians arrive in fully stocked vehicles, handle Fairfax County permit coordination from start to finish, and back every installation with warranties on both parts and labor. Free estimates are available before any work begins.
Ready to schedule your water heater installation or get a free estimate? Call us today at (571) 470-5898, and we’ll match you with a technician as soon as possible, including same-day appointments when scheduling allows.
Why Fairfax Homeowners Choose Long's Corporation for Water Heater Replacement
Over 90 years of residential plumbing work in Northern Virginia means we’ve installed water heaters in nearly every housing type Fairfax has: townhouses along the I-66 corridor, established neighborhoods near the Beltway, and newer subdivisions. Each comes with different access points, gas line configurations, and venting setups, and our team already knows what each typically requires.
Manufacturer warranties on water heaters generally require professional installation by a licensed technician to remain valid. Beyond protecting your warranty, working with a licensed plumber helps confirm the installation meets the Virginia Uniform Statewide Building Code. Fairfax County requires a permit for all water heater replacements, and an incorrectly vented gas water heater creates a real carbon monoxide risk. Proper venting isn’t optional.
Here’s what comes with every Long's Corporation installation:
- Same-day service when available: Water heater failures are treated as priority calls
- Free estimates: No commitment required before you know the cost
- Permit coordination: We handle the Fairfax County permit and inspection process
- Warranties on parts and labor: Every installation is fully covered
- Financing options: To make the cost manageable
- Spanish-speaking support: Available for homeowners who prefer it
- 100% satisfaction guarantee: On every job we complete
- BBB A+ rating: Maintained continuously since 1998
What a Water Heater Installation Looks Like From Start to Finish
Before any work begins, our technician assesses the existing unit, the gas line or electrical supply, venting, and the surrounding space. That walkthrough confirms the right replacement unit and identifies anything that needs to be addressed to meet current code, such as deteriorating flue connections or an expansion tank requirement.
Assessment & Permit Coordination
Expansion tanks are required in Fairfax County when a pressure-reducing valve or check valve is present on the supply line, a condition that’s common in many neighborhoods here. We check for it on every job. Once the assessment is complete, we pull the permit, disconnect and fully drain the old unit, remove it, and install the new one. The pressure relief valve is tested, and its discharge pipe is routed to county specifications. All connections are checked for leaks, and the temperature setting is verified before we leave.
Timeline & Final Inspection
A standard tank replacement in an accessible location typically takes two to four hours, and hot water is restored the same day. After installation, Fairfax County requires an inspection of all permitted work. We coordinate that inspection on your behalf and walk you through the new unit’s operation and manufacturer warranty coverage before we pack up.
Your home deserves reliable comfort and dependable plumbing. Our financing options help make repairs, replacements, and installations easier to manage. Apply today and take the next step toward a more comfortable home.
What Fairfax Homeowners Say About Working With Us
Long's Corporation has held a BBB A+ rating since 1998. Our customers are the third generation of Northern Virginia homeowners we’ve served, and the feedback we hear most consistently points to punctuality, honest diagnosis, and technicians who explain the work clearly and walk homeowners through the new unit before they leave.
We’re a third-generation, women-owned company, and we answer our phones around the clock. Spanish-speaking support is available, and every job is backed by our 100% satisfaction guarantee. Those aren’t add-ons. They’re how we’ve kept customers coming back for over 90 years.
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"Very Impressed"
Steve the technician was very impressed, professionalism, experienced, and very good communication skills! Very good representation of Long’s Corporation.
Shaoxian Y. -
"10 Stars"
Long’s Corporation is the definition of high quality service. Their technicians are always courteous, efficient, and professional. If I could give a 10 star review, I would!
Katelyn M.
Why Choose Us?
Benefits of Working With an Expert Team
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Immediate, Same-Day Service
Some things can't wait. We can come see you today!
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100% Satisfaction GuaranteeWe never leave you unhappy! We guarantee it.
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Hablamos EspañolOur team is proud to help with Spanish services.
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Women-Owned Company
Three generations of woman-owned leadership.
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Affordable Financing Options
We make services affordable with financing options.
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24/7 Call Support Available
We're here to help you whenever you need us.
Water Heater Installation Questions We Hear Most Often
Do I need a permit to replace my water heater in Fairfax County?
Yes. Fairfax County requires a permit for all water heater replacements. We handle the permit coordination and inspection scheduling as part of every installation, so you don’t need to manage that process yourself.
How long will I be without hot water?
For a standard tank replacement in an accessible location, the installation typically takes two to four hours. In most cases, hot water is restored the same day we arrive.
Can a leaking water heater be repaired?
Sometimes. Leaks from the top connections or the pressure relief valve may be repairable. A leak from the base of the tank almost always means the tank itself is compromised and needs full replacement. Our technician can diagnose the source before recommending anything.
How often should I flush my water heater?
Annual flushing is the standard recommendation. It’s worth taking seriously in Fairfax County, where moderately hard water conditions cause sediment to accumulate faster than in softer-water areas.
Does the type of water heater I choose affect my warranty?
Many manufacturers require licensed professional installation for the warranty to remain valid. Work completed by an unlicensed installer, or work done without a permit, can void coverage before the unit has run a single cycle.
Schedule Your Water Heater Replacement in Fairfax
A new water heater installed correctly, permitted properly, and backed by a solid warranty is a straightforward project when you have the right team. Long's Corporation offers free estimates, same-day service when scheduling allows, and a 100% satisfaction guarantee on every water heater installation we complete in Fairfax. Financing options are available if upfront cost is a concern.
Call (571) 470-5898 to get started or request your free estimate online.
