Analyzing 9,848,2429.8M ReviewsFor 27,74827.7K Experts

Experts Reviews · Company report
Zark Heating & Cooling Inc. logoHow 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%97+52.9Reliability 24%96+23.3Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 97Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.97SCORE

Zark Heating & Cooling Inc.

Joliet, IL · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #2Position by Experts Score among all companies we track in this category. of 10 boiler installers · 5.0★ from 891 Google reviews

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Report card

Percentile vs other boiler installers (100 = best)Each 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 value; weakest: reliability.

SatisfactionSatisfaction · 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.Zark Heating & Cooling Inc. is better than 97% of boiler installers.A
97
ReliabilityReliability · 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.Zark Heating & Cooling Inc. is better than 96% of boiler installers.A
96
Craft & serviceCraft & service · 0% of the scoreGoogle 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.Zark Heating & Cooling Inc. is better than 100% of boiler installers.A
100
ValueValue · 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.Zark Heating & Cooling Inc. is better than 100% of boiler installers.A
100
MomentumMomentum · 0% of the scorePenalises 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.Zark Heating & Cooling Inc. is better than 100% of boiler installers.A
100
Replies to reviewsReplies 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.Zark Heating & Cooling Inc. is better than 100% of boiler installers.A
100

Reviews for your job

Customers hired Zark Heating & Cooling Inc. for 8 kinds of job.

Zark Heating & Cooling Inc. for cleaning

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.4
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).5.00
Usually paidThe price range customers picked most often for this job.—
Category typicalWhat the middle half of customers paid for this job across all companies in the category.$135–$484
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 79/100.How Job match is calculatedBuilt only from reviews Google tagged “Cleaning”:Stars on this job 55%Number of such jobs 25%Overall Experts Score 20%Stars are pulled toward the category average when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.#5 / 6

All 4 Google reviews tagged “Cleaning”

MarkLocal Guide · 28 reviewsTotal 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. · 3 years ago★★★★★

Have to honestly say this company is fantastic. Pedro Silva, the technician, was thorough and quick. Pleasant and respectful. Just found a real HVAC company today Thanks Zark Thanks again Pedro

CleaningHeating system maintenanceHVAC system maintenance+ Quality+ Professionalism+ Value
Tony6 reviewsTotal 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. · 4 years ago★★★★★

Dan was great and professional

CleaningHeating system maintenance+ Responsiveness+ Punctuality+ Quality
linda1 reviewTotal 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. · 5 years ago★★★★★

Dan and Brian came out today to service my furnace. Dan and Brian were very courteous and professional. Dan explained everything thoroughly. I have complete confidence that my unit is working now as it should. I highly recommend Zark Heating & Cooling!!

Cleaning+ Responsiveness+ Punctuality+ Professionalism
Kevin4 reviewsTotal 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. · 5 years ago★★★★★

So when nobody else would answer at 450 pm when calling for a semi emergency, Zark answered AND had a tech out the next day at 8am. After doing buisness with them as a random google search, im defitnitly calling them for my next job. i especially wont need to waste time searching google for HVAC companies that…

CleaningHVAC system maintenanceRepair HVAC+ Responsiveness+ Punctuality+ Quality

Price

$2270% vs typical boiler installers

Bar = middle half of what customers paid · gold mark = category median.

Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Great price 48%Reasonable 49%Overpriced 2%Not sure 2%

Jobs customers hired them for

JobReviewsCategory typical
HVAC system maintenance144$37–$264
HVAC system repair93$145–$618
Heating system installation75$1.4k–$2.8k
Install AC73$1.6k–$3.2k
Heating system maintenance67$37–$317
A/C system maintenance66$39–$318
Heating system repair63$78–$745
A/C system repair45$216–$611

Compare with

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