iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%86+46.9Reliability 24%79+19.2Value 14%81+11.5Replies to reviews 7%48+3.4Experts Score= 81Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.81SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#43 of 50 heat pump installation servicesiPosition by Experts Score among all companies we track in this category. · better than 14%
4.8★★★★★300 Google reviews · 24 photos
94%five-star reviews
4.85★last 12 monthsiAverage stars on reviews from the last 12 months only.
3.1%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
8%reviews answered by the owner
$271typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
Customers frequently praise the company for prompt service, clear communication, and thorough explanations of plumbing issues. Positive reviews highlight efficient repairs for leaks, faucets, and heating systems, often noting professional conduct and fair pricing. However, several low-star reviews cite significant dissatisfaction with high costs for minor tasks, lack of guaranteed fixes, and instances where technicians left problems unresolved or damaged items.
Google rating: 4.8 out of 5 from 300 reviews (94% five-star).
Reviews on this page: 300 Google reviews (231 with written comments, 2 with photos).
Owner responses: the business replied to 8% of reviews.
Most recent review: June 4, 2026.
Service: Heat Pump Installation Service serving Billings, Montana.
Data from Google, last updated October 27, 2026.
Score profile vs other heat pump installation services
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: craft & service and momentum; weakest: replies to reviews.
Williams Plumbing & HeatingHeat Pump Installation Services median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Williams Plumbing & Heating: 86/100 on this factor. Category median: 92.A
86
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Williams Plumbing & Heating: 79/100 on this factor. Category median: 90.B
79
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Williams Plumbing & Heating: 100/100 on this factor. Category median: 95.A
100
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Williams Plumbing & Heating: 81/100 on this factor. Category median: 100.A
81
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Williams Plumbing & Heating: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Williams Plumbing & Heating: 48/100 on this factor. Category median: 63.C
48
Bar = this company · dark tick = category median.
Star ratings
300 Google reviews we collected
4.8of 5
5 stars28394%
4 stars62%
3 stars10%
2 stars21%
1 star83%
Praise vs complaints
Phrases our text analysis found in 231 written reviews
98%praise
Praise46498%
Complaints92%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
97%fair
Great price925%
Reasonable2467%
Overpriced13%
Not sure26%
$271-40% vs typical heat pump installation services
Middle half of what 27 customers paid ($161–$509) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude14731%
Speed & response11825%
Quality & results6915%
Would recommend5411%
Communication429%
Price & value337%
Honesty & trust102%
What customers talk about
We read 231 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Travis and Kirk were knowledgeable, efficient, and friendly.”
“Both times he was quick and efficient in finding the trouble and fixing it.”
“Sara helped get the appointment set and Travis Farnum fixed the problem no one else would!”
“I would recommend Williams Plumbing to anyone looking for expertise and great customer service Montana.”
“They took the time to explain issues in depth and made sure all of our questions were answered.”
“The service is timely, high quality, and reasonably priced, especially for the quality of expertise.”
“Price Gouging.”
“He is someone I would trust to do any future plumbing work.”
People customers mention
Kirk23 reviews
Travis14 reviews
Jason11 reviews
Hollo6 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Williams Plumbing & Heating for 8 kinds of job. Pick one to see what they paid and said.
Joan5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
Jason did a great job. He is a very nice person. He was very thorough. He repaired a shut off valve that over the years no one was willing to do and made sure all of the other shut off valves actually worked and did not leak. Replaced two faucets and replaced everything in my two toilet tanks and fixed the leak in my kitchen sink. He
Rich1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
Second time Jason came.
Both times he was quick and efficient in finding the trouble and fixing it.
We’ll be asking for him if needed again.
PS: The dogs like him, so he must be ok.
Paid $200–300Reasonable priceToilet repair
Becky6 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
Great service. Professional, kept me updated on progress and went above and beyond to help me.
Paid $900–1,000Reasonable pricePlumbing pipe repairService not listed
JeremyLocal Guide · 27 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 10 months ago★★★★★
Excellent service! Quickly identified the problem with the garbage disposal leaking. It is fairly new, so the flange gasket needed to be cleaned and reseated properly. In and out with friendly service and a smile!
Elimtevir1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 10 months ago★★★★★
Jason was professional yet personable. He came in asked a few questions and got right to work. He ran into a couple of hiccups but pivoted with well thought out solutions. He replaced the pipe and got things draining. He cleaned up after himself after he made sure that everything was good.
Paid $300–400Reasonable priceDrain cleaningService not listed
Nancy1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 11 months ago★★★★★
On time and great communication. Explained exactly what was needed and how much it would cost to repair 2 toilets. Friendly and efficient. I would definitely recommend to friends and family.
Travis and Kirk were knowledgeable, efficient, and friendly. They took the time to explain issues in depth and made sure all of our questions were answered.
Response from the owner · 5 months ago
Hi Anna, Thank you for your kind feedback! We’re glad to hear Travis and Kirk were able to provide clear explanations and a professional, friendly experience. We truly appreciate your support!
Joan Seibert5 reviewsiTotal number of Google reviews Joan has written across all businesses on Google Maps, not just this one.
Jason did a great job. He is a very nice person. He was very thorough. He repaired a shut off valve that over the years no one was willing to do and made sure all of the other shut off valves actually worked and did not leak. Replaced two faucets and replaced everything in my two toilet tanks and fixed the leak in my kitchen sink. He
Second time Jason came.
Both times he was quick and efficient in finding the trouble and fixing it.
We’ll be asking for him if needed again.
PS: The dogs like him, so he must be ok.
Price assessment: Reasonable price
Price: $200–300
Services: Toilet repair
Jack Tuell4 reviewsiTotal number of Google reviews Jack has written across all businesses on Google Maps, not just this one.
Very prompt. Came quickly after our call. Very professional, courteous, knowledgeable about what needed to be done up to code. Very happy with their work, neatness. Friendly!
Price assessment: Reasonable price
Services: Water heater installation
Lindsey McDonnell6 reviewsiTotal number of Google reviews Lindsey has written across all businesses on Google Maps, not just this one.
Travis with Williams Plumbing was awesome! Super fast, knowledgeable and easy to work with. They fixed a leak in our boiler that another company attempted to fix multiple times. I would recommend Williams Plumbing to anyone looking for expertise and great customer service Montana.
Becky Piseno6 reviewsiTotal number of Google reviews Becky has written across all businesses on Google Maps, not just this one.
Excellent service! Quickly identified the problem with the garbage disposal leaking. It is fairly new, so the flange gasket needed to be cleaned and reseated properly. In and out with friendly service and a smile!
Price assessment: Reasonable price
Price: $100–200
Services: Garbage disposal repair
Elimtevir1 reviewiTotal number of Google reviews Elimtevir has written across all businesses on Google Maps, not just this one.
Jason was professional yet personable. He came in asked a few questions and got right to work. He ran into a couple of hiccups but pivoted with well thought out solutions. He replaced the pipe and got things draining. He cleaned up after himself after he made sure that everything was good.
Price assessment: Reasonable price
Price: $300–400
Services: Drain cleaning, Service not listed
Kathy Cashmore7 reviewsiTotal number of Google reviews Kathy has written across all businesses on Google Maps, not just this one.
Williams Plumbing has done it again. I asked for a service & they gave me good advice; letting me know that I should call another plumbing contractor that can help me diagnose me sewer line issue, No charge for coming over, looking at the issue, & giving me a recommendation. I would definitely recommend William’s Plumbing in Billings.
Price assessment: Great price
Services: Sewer repair
Chris Willams3 reviewsiTotal number of Google reviews Chris has written across all businesses on Google Maps, not just this one.
