We’re Open 24/7 (404) 467-2148
A family in the kitchen holding their baby in the air

Back To Blog

How To Prevent Tankless Water Heaters From Freezing in Southern Homes

Electric tankless water heater

Most Atlanta-area homeowners know how to keep their pipes from freezing when the temperature drops, but not many know that their tankless water heater could also freeze. 

A frozen tankless water heater is not as common as frozen pipes, but it’s important to know how to keep your tankless water heater from freezing and thaw it if it does. This will help you get the most out of your unit over its long service life and avoid unexpected repairs or an early replacement.

Why Do Tankless Water Heaters Freeze?

Unlike traditional water heaters that are always radiating heat from water stored in the tank, tankless water heaters are more likely to freeze in cold weather because they only run when you turn on a hot water tap.

Tankless water heaters are designed with built-in freeze protection, but power outages and low temperatures can still cause them to freeze, especially if they’re installed in a garage or outside.

How To Prevent a Frozen Tankless Water Heater

If you know that inclement weather is on its way, you can take the following steps to make sure your tankless water heater is less likely to freeze:

  • Leave the hot water running: Water is less likely to freeze when it’s in motion. Your next water bill could be slightly higher, but it will be less expensive than a water heater repair or replacement.
  • Insulate the tankless water heater pipes: Wrap them in an insulating material to prevent cold air from reaching them.
  • Connect your tankless water heater to a generator: Most tankless water heaters have built-in freeze protection that only works when there’s power. To maintain this feature during a power outage, ensure a generator can power your tankless water heater.

How To Thaw a Tankless Water Heater

A frozen tankless water heater can lead to frozen pipes, which can cause severe water damage to your home.

Don’t attempt to thaw the system yourself if you notice any leaks. Call a plumber to thaw it for you.

If you don’t think it’s leaking, start thawing your unit immediately. Here’s how:

  1. Turn off the gas and water valves for the unit.
  2. Turn off the circuit breaker serving your tankless water heater.
  3. Wait a few minutes for the system to start thawing.
  4. Open the water supply valve so that water can drain.
  5. Check the unit, surrounding piping, internal parts, and outdoor pipes for leaks.
  6. If water flows normally without any leaks, open the valves and flip the breaker back on.

Choose UAT for Top-Rated Tankless Water Heater Services in Atlanta, GA

If you’re looking for a reliable team of plumbers to service your tankless water heater, reach out to United Air Temp for repair and replacement in Atlanta.

We’ve delivered customer satisfaction since 1931, and our trained technicians have the expertise and tools to provide plumbing services you can count on.

Each member of our team values and delivers high-quality customer service, so you can trust our plumbers to go the extra mile to protect your home’s comfort and investments.

Request a tankless water heater service today by calling (404) 467-2148.

Flag with over 90 years in business text
Leader in Home Comfort Since 1931Get Your Free Estimate

Sidebar

Why Choose Us Discover the United Difference
Trained Technicians
Upfront Pricing
Environmental Health & Safety
Value-Added Services
On-Time Scheduling
Commitment to Community
Quality Craftsmanship
Satisfaction Guaranteed
Trained Technicians
Upfront Pricing
Environmental Health & Safety
Value-Added Services
On-Time Scheduling
Commitment to Community
Quality Craftsmanship
Satisfaction Guaranteed
Save on Your Service Our Goal Is to Keep Your Home Comfortable
Save Up To $2,000When You Buy a Complete HVAC System with A/C and Furnace!
Expires 06/30/24 *Cannot be combined with any other offer. Not applicable for a heat pump system.
FREE second opinion - HVAC or Water Heater replacement
Expires 06/30/24
$250 OFFtankless water heater replacement
Expires 06/30/24
FREEestimate on water heater replacement
Expires 06/30/24
FREEestimate on water treatment system
Expires 06/30/24
$25 OFF for referrer and friend
Expires 06/30/24
FREEestimate on HVAC system replacement
Expires 06/30/24
Call us for a FREE ESTIMATE to install a new ductless mini single zone system with white finished indoor air handler at a SPECIAL PRICE.
Expires 06/30/24
$50 off repair
Expires 06/30/24
$500 off a complete new system
Expires 06/30/24
$50 HVAC Repair
Expires 06/30/24
with 12 Months No Interest $500 Off New System Purchase
Expires 06/30/24
Expert Dryer Vent Cleaning. When combined with other services. $89.95
Expires 06/30/24
Free hot water tank cleaning & safety inspection with any HVAC repair!
Expires 06/30/24
Free hot water tank cleaning & safety inspection with any plumbing repair!
Expires 06/30/24
Flag with over 90 years in business text Over 90 tears in business banner
Satisfied Customers
Total Reviews
4.5 Google Rating
What Our Clients Are Saying
testimonial_image The tech was at my home less than 10 minutes and gone within 20 minutes due to having my A/C up and running. I really appreciate his response to my home and working with my son due to me being out of town, but we spoke on the phone.
testimonial_image The technician arrived promptly, wore a mask, was very courteous and professional. I am generally very satisfied with service by United Air Temp. In addition to good service (they repair well), it is easy to speak to a person, and promptly. Thank you.
testimonial_image Great service! I called because I was under the impression the AC was not working upstairs. Someone came on the same day, checked out the system, and ensured everything was working. He was polite, thorough, and friendly.
testimonial_image Tech was very attentive and professional. He went out his way to explain everything to me as he was doing it. I appreciated him keeping me informed.
testimonial_image The service technician was awesome! He spent the extra time necessary to ensure the leak in our system was fixed, the system fully recharged and everything was functioning as it should. He was extremely thorough and very professional. We are extremely pleased with the result!

United Air Temp was named the 2022 HVACR National Contractor of the Year.

Contractor of the Year-2022 Click Here to Learn More
Affiliations & Awards
phcc_logo
NATE yellow house logo with text reading north american technician excellence
light blue energy star logo
Better Business Bureau blue logo
green and black Rebuilding Together logo
Feed the Fight logo with blue kitchen utensils
Habitat for Humanity green house with blue people logo