In the study, 69% of the most-reviewed HVAC companies promoted a maintenance plan vs 43% of the least-reviewed.
In the study, 69% of HVAC companies in the highest review-volume group promoted a maintenance plan on their website, compared with 43% in the lowest review-volume group.
Share of websites, least-reviewed vs most-reviewed group in the study: financing 25% vs 70%, maintenance plan 43% vs 69%, guarantee or warranty claim 35% vs 60%, emergency service advertised 46% vs 75%.
Design-weighted estimates from the Confirm half (500 companies) of a 1,000-company preregistered study in 10 U.S. metro areas, 2026 data. 95% confidence intervals from a stratified bootstrap. Source: AgencyFix Research, 2027 HVAC Promise vs. Proof Report.
| Measure | Value |
|---|---|
| Mentions financing — Least-reviewed group | 25% |
| Mentions financing — Most-reviewed group | 70% |
| Mentions financing — difference, points (95% CI) | 46 (34–56) |
| Mentions financing — n | 247 |
| Promotes a maintenance plan — Least-reviewed group | 43% |
| Promotes a maintenance plan — Most-reviewed group | 69% |
| Promotes a maintenance plan — difference, points (95% CI) | 27 (15–40) |
| Promotes a maintenance plan — n | 247 |
| Guarantee / warranty claim — Least-reviewed group | 35% |
| Guarantee / warranty claim — Most-reviewed group | 60% |
| Guarantee / warranty claim — difference, points (95% CI) | 25 (12–37) |
| Guarantee / warranty claim — n | 247 |
| Advertises emergency service — Least-reviewed group | 46% |
| Advertises emergency service — Most-reviewed group | 75% |
| Advertises emergency service — difference, points (95% CI) | 29 (17–41) |
| Advertises emergency service — n | 247 |
<iframe src="https://agencyfix.com/data/hvac-2027/embed/c4-review-volume-dumbbell/" title="The most-reviewed HVAC companies in the study made more of these claims on their websites" width="640" height="400" loading="lazy" style="border:0"></iframe> <p>Source: <a href="https://agencyfix.com/data/hvac-2027/findings/maintenance-plan-by-review-volume/">AgencyFix Research, 2027 HVAC Promise vs. Proof Report</a></p>
| Population | HVAC companies with a website listed on Google in 10 large U.S. metro areas (2026 study sample; Confirm half, design-weighted) |
|---|---|
| Denominator | companies in the highest or lowest review-volume tercile of their metro with a responding website (n = 247) |
| Editorial strength | supporting |
| Statistical status | confirmed |
| Claim | hvac-2027-c4d-maintenance-plan-by-review-volume · v1 · sha256 e68316a50a2e… |
Methodology · Full report · All findings
Related findings
headlineIn the study, 57% of 24/7-claiming HVAC companies did not list 24-hour hours on Google.weakIn the study, 8% of HVAC emergency-service websites clearly explained what to do after hours (AI-assisted review).supportingIn the study, 70% of the most-reviewed HVAC companies mentioned financing vs 25% of the least-reviewed.headlineIn the study, the most-reviewed HVAC companies replied on average to 66% of recent Google reviews; the least-reviewed, 24%.
How to cite
Source line: Source: AgencyFix Research, 2027 HVAC Promise vs. Proof Report
AgencyFix Research. (2027). The 2027 HVAC Promise vs. Proof Report (study cxi-hvac-2027-1000, claim versions v1). https://agencyfix.com/data/hvac-2027/findings/maintenance-plan-by-review-volume/
Please cite the specific finding page when quoting a single number; numbers are design-weighted estimates from the Confirm half of the study.