Hiller Plumbing, Heating, Cooling & Electrical
Plumber · Knoxville, TN · Open 24 hours per Google listing
Our verdict
4.9 stars across 5,345 reviews with 79% five-star ratings; themeCounts.professional=52 and workmanship=14 dominate, but surprise_fees flagged 3 times and 35-50% pricing premium noted in 2 reviews.
Scores are our editorial reading of published customer reviews — not a verification, license check, or guarantee.
Ranked #6 of 15 plumbers we've reviewed in Knoxville, TN · compare all →
Our opinion, based on the 100 reviews we analyzed from Google, Yelp and BBB · Analysis updated Jun 2026 · How we decide ↗
Lists 24-hour service on its Google profile — and reviewers describe after-hours calls.
What reviewers praise
Fast response in 11 of 100 reviews; Saturday evening AC call resulted in fix by 8 PM, same day confirmed repeatedly.
2 cited reviews
“Ron did an excellent job servicing our hot water heater and replacing our garbage disposal. He was very thorough in presenting options for us to consider and the pro's and con's of each and was able to answer all our questions.”
“We called at 4:00 on a Saturday 90° out air conditioner not working tech showed up by 7:30 had the problem fixed by 8:00.”
Cited in 3 of the 100 reviews we analyzed — 1 cited review not excerpted here.
Repiping work handled confidently — crew impressed on a total repipe job where Hiller was not the cheapest but competitive.
1 cited review
“We had estimates from several companies to do a total re-pipe (no small affair) and Deven with Hiller impressed us most, so we went with Hiller. Even though they weren't the cheapest, they were in the ballpark of the other two.”
Workmanship cited in 14 of 100 reviews; revisit resolved lingering repair on second visit with full resolution.
1 cited review
“Ron did an excellent job servicing our hot water heater and replacing our garbage disposal. He was very thorough in presenting options for us to consider and the pro's and con's of each and was able to answer all our questions.”
Cited in 2 of the 100 reviews we analyzed — 1 cited review not excerpted here.
What reviewers report — the concerns
Other directories bury these. We think you should read them before you call. Every concern below comes from the reviews it cites.
Red flag
Started commercial job without city permits, resulting in stop-work order and nearly 2-month business opening delay.
Cited in 1 of the 100 reviews we analyzed.
Red flag
Surprise fees flagged in 3 reviews — charged $70 service call on arrival then quoted high; reset-only repair required a second call at additional cost.
Cited in 2 of the 100 reviews we analyzed.
Pricing 35-50% above competitors by one reviewer's account; service call fee required before any quote provided.
“Very expensive, even for routine fixes. They say they have simple, upfront pricing. That just means they charge you a higher price than virtually all other competitors and ignore any questions you might have as to why they are so much more expensive. Great service, but definitely not great enough to justify prices 35-50 percent higher than other plumbing services.”
Cited in 2 of the 100 reviews we analyzed.
Keep it in proportion: these concerns are cited in 4 of the 100 reviews we analyzed. Most reviewers report positive experiences — see the full rating picture below.
The evidence — in reviewers' own words
Critical
“Got a hold of Keith. No plumber has ever called back and no electrician as ever called back. My son has tried several times to contact and nothing.”
“I had a leak under the sink in the master bedroom. The technician was great. He was here for no more than 45 minutes. My bill was $209 - $9 for the part - $200 for labor. I don't remember their labor charges being that ridiculous. This will be that last time I use them. There are too many other honest, reasonable plumbers out there to be taken advantage of by Hiller. And to think I was going to purchase a HVAC unit …”
“I called Hiller because the heating in my 8 year old Carrier HVAC system was not working. Ivan Walsh, a technician came out, spent over 30 minutes in his van on the phone and laptop (I could see him). He then showed me a 'stock' photo of some unrecognizable rusted thing. When I asked him to show me on the actual unit, he did not take the panel off so I could see. He said he would have to cut the main trunk of my …”
Positive
“John and Spencer came in and understood my problem right away and went right to fixing it. Inspected house plumbing in crawl space and made me aware of concerns, set appointment to have project manager review and develop bids. Overall friendly and very professional. Very pleased with action.”
“Alex and Andrew did a fabulous job with all my electrical needs. They went above and beyond. Very pleasant and courteous. I could not have asked for 2 better guys! Andrew and Dale did an excellent job on replacing my main water line from the street to my house. Thank you Hiller for taking care of my needs so quickly.”
Quotes are reproduced verbatim from public reviews on the platforms shown; we select which to feature, and selection reflects our editorial judgment. Report a quote that doesn't match its source ↗
The rating picture
Our sample skews heavily toward critical reviews — it disagrees with the Google average shown above.
Newest review in our sample: Mar 2026.
Across platforms
Should you hire Hiller Plumbing, Heating, Cooling & Electrical?
Hire if
- You need high-quality work that holds up over time
- You need fast same-day or after-hours response
Think twice if
- You need rock-bottom prices with zero flexibility on the quote
- You need detailed walkthroughs and written estimates before work starts
Look elsewhere if
- You're highly price-sensitive
Advice derived from the review analysis above — how we decide.
Own Hiller Plumbing, Heating, Cooling & Electrical?
You can respond to our analysis, correct business facts, or dispute the accuracy of a quoted review. Responses that check out get published on this page, and factual errors get corrected — see our corrections policy. We don't remove accurate quotes, but we'll re-run your assessment as your reviews change.
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Nearby: Knoxville · Lenoir City · Briceville