How many HVAC and plumbing companies are in Alton, IL?

The ProComfort Registry lists 4 heating, cooling and plumbing businesses serving Alton: 4 offering HVAC and 0 offering plumbing (some do both).

What is the average Registry Score in Alton?

Rated companies in Alton average 62 out of 100. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.

Which companies are featured in Alton for 2026?

ProComfort Registry features Tomlin Heating and Air, J&J Mechanical in Alton. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.

How are Alton companies ranked?

By Registry Score, with records confirmed by their owners listed first. See https://procomfortregistry.online/methodology for how the score is calculated.

Alton, Illinois

HVAC & Plumbing Pros in Alton, IL

4 businesses serve Alton. Compare them by Registry Score — reputation, digital presence and reach — with owner-confirmed records listed first.

Pros: 4
Avg. score: 62
Featured: 2

Featured · 2026

Featured in Alton

How companies are featured →

Strong

Tomlin Heating and Air

Featured

Alton, IL 62002 4.8(76 reviews)

HVACHeating

(314) 319-9678 Website

Developing

J&J Mechanical

Featured

Alton, IL 62002 4.2(1 reviews)

HVACHeatingA/CCommercial

(618) 208-7407

Showing 1–4 of 4

Strong

SSP Handyman & HVAC Services

Alton, IL 62002 4.6(167 reviews)

HVAC

(618) 465-3298 Website

Strong

Genes Appliance AC & Heating

Alton, IL 62002 4.8(192 reviews)

HVACHeatingA/C

(618) 462-6732 Website

Strong

Tomlin Heating and Air

Featured

Alton, IL 62002 4.8(76 reviews)

HVACHeating

(314) 319-9678 Website

Developing

J&J Mechanical

Featured

Alton, IL 62002 4.2(1 reviews)

HVACHeatingA/CCommercial

(618) 208-7407

Alton at a glance

How many HVAC and plumbing companies are in Alton, IL?: The ProComfort Registry lists 4 heating, cooling and plumbing businesses serving Alton: 4 offering HVAC and 0 offering plumbing (some do both).
What is the average Registry Score in Alton?: Rated companies in Alton average 62 out of 100. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
Which companies are featured in Alton for 2026?: ProComfort Registry features Tomlin Heating and Air, J&J Mechanical in Alton. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
How are Alton companies ranked?: By Registry Score, with records confirmed by their owners listed first. See https://procomfortregistry.online/methodology for how the score is calculated.