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TRUSTED BY OLNEY, MD HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon104
    Verified water heater services reviews

Top-Rated Water heater pros in Olney - Updated Nov 2026

Avatar for Jimmy Gusky Heating & Air LLC
Jimmy Gusky Heating & Air LLC
4.3(
374
)
Tankless Water Heater - InstallWater Heater - Install or ReplaceWater Heater - Repair or Service+6 more

Serving Olney, MD and surrounding areas

Approved

In business since 1996

Emergency services offered

Credit card accepted

"Great. The contractor from Jimmy Gusky arrived on time and within 45 minutes had provided a full inspection and determined the unit was fine and had simply malfunctioned temporarily during several extremely hot day.s. So this saved me many thousands of dollars. Great experience."
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
4 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Fred and Son Plumbing
Fred and Son Plumbing
4.8(
68
)
Solar Water Heater System - InstallTankless Water Heater - InstallTankless Water Heater - Install - For Business+6 more

Serving Olney, MD and surrounding areas

Approved

In business since 1990

Free estimates

Customers say: True professional

"Quick and professional. We have lived in the Washington, DC area for over 40 years and at last we have found a great plumber! Fred is highly skilled, explains everything before starting work, and quotes the price, so no surprises. He is very responsive and and comes quickly, even on a Saturday. A few months ago, we had a sudden leak in one of our toilets. It was afternoon when I called Fred, but he was able to fix it the same day. I highly recommend Fred and am happy to have found a great plumber."
Recommended by100%of homeowners
Avatar for Pipeworks Plumbing, Heating, and Air
Pipeworks Plumbing, Heating, and Air
4.8(
622
)
Water Heater - Repair or Service

Serving Olney, MD and surrounding areas

Approved

In business since 2016

Emergency services offered

Small jobs welcome

"Johnny was very professional in performance of the hot water heater installation and helpful in answering all of my questions. Highly recommend the company. Cheers"
Lennox 14ACX (Photo 1)
Lennox XC16
Trane Heat Pump 5
Its the details that count
Lennox 14ACX (Photo 2)

+66

Response time2 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for GAC Services
GAC Services
4.7(
295
)
Tankless Water Heater - InstallTankless Water Heater - RepairWater Heater - Install or Replace+1 more

Serving Olney, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"Fritz B. was my sales rep and he clearly knew what he was doing, including making a few minor recommendations that were in my financial interest. Easy to set up the scope of work. The grew was great, came in and did a great job, took about 6 hours. They even rerouted the exhaust flue for my hot water heater even though they did not replace the heater because the install guy Chris said "they did this dumb". Overall a great experience and I would recommend."
Additional Photos
6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Supreme Service Today
Supreme Service Today
4.4(
479
)
Water Heater - Repair or ServiceTankless Water Heater - Repair

Serving Olney, MD and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"They were up front with what is wrong. Provided explanation of the quote. Asked permission to get access to places. They explain the reasoning for the cost and the risks if ignored. Pricing was fair. Went above an beyond to solve the water heater issue we had. Even calling in an electrician to help with a fix. They were on-time to early on their scheduled appointments. Excellent customer service."
Response time9 hrs
Response rate100%
80 neighbors recently requested a quote
Markool Heating & Cooling, LLC
4.7(
18
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Install+5 more

Serving Olney, MD and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."
Response time1 day
16 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Atlantic Blue Water Services
Atlantic Blue Water Services
4.8(
124
)
Water Heater - Install or Replace

Serving Olney, MD and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"On time, in fact earlier than expected. Courteous technicians. Provided options for repair or replacement and was forthcoming about what he saw. Recommended a highly reviewed water heater. All around excellent."
The Fleet
The Building on Rt. 140
Main water line replacement!
Well Pump Replacement
Training Session!

+22

Response time10 hrs
Response rate88%
68 neighbors recently requested a quote
Avatar for Pohlman Plumbing Inc
Pohlman Plumbing Inc
4.4(
42
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Olney, MD and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Hired Pohlman to evaluate two natural gas tank water heaters in our home, one of which was unoperational. They suggested combi-boiler for our home in lieu of two tank water heaters. They did a great job and we are very pleased. Customer service is top notch, and I highly recommend Pohlman Plumbing."
Finished Shower
Finished Shower
Panoramic View
Vanity
Mid-replacement

+10

Response time8 hrs
Response rate97%
Recommended by86%of homeowners
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Water Heaters FAQs, answered by experts

Gas water heaters last between eight and 12 years on average. You can help them reach their maximum lifespan with regular cleanings, maintenance, and professional checkups, though don’t hesitate to swing for a full replacement if the total cost of repairs is greater than that of purchasing and installing a new unit. 

Price variations arise from size, type (tankless or tank), efficiency grades, and installation complexity, including labor and materials.

Often, the first issue you might encounter is a lack or loss of power—this could be caused by a tripped switch or a failed heating element. If your hot water is not producing enough power and its size is not the issue, you might need to replace one of its heating elements. A leaking water heater could be caused by tank erosion.

If your gas water heater is over 20 years old, it should be replaced. Gas water heaters can last up to 12 years and while they can exceed this expectancy if well-maintained, a heater that's 20 years old would require replacement. The heater is unlikely to run as efficiently as a new model and could be more expensive to do so.

The size needed for your expansion tank is determined by the size of your home's water heater. Expansion tanks are available in 2-gallon and 4.5-gallon sizes. A 2-gallon tank will be appropriate for water heaters up to 50 gallons. An adequately sized tank should have a volume that equals 2% to 5% of the water volume within the system. A plumber can evaluate your home's water pressure, water heater size, and other factors to provide suggestions for picking out the best expansion tank.

The Olney, MD homeowners’ guide to water heater services

From average costs to expert advice, get all the answers you need to get your job done.