A. C. Rimmer

HVAC contractor
4.2(36 reviews)
3 Keystone Dr Suite B, Mechanicsburg, PA 17050
A. C. Rimmer

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About A. C. Rimmer

A. C. Rimmer has served Central Pennsylvania homeowners since 2000, earning a 4.2-star average from 36 verified reviews. The Mechanicsburg-based contractor handles residential and light commercial work across the region, with the website explicitly naming Dauphin, Cumberland, and Perry counties as core territory. Beyond standard HVAC licensing, the company carries a master plumber credential, allowing them to address water heaters, drain issues, and backflow prevention without subcontracting. Their Monday-through-Friday schedule runs 7:30 AM to 4 PM, matching the rhythm of a traditional trades shop rather than a 24-hour emergency response firm.

What distinguishes A. C. Rimmer from neighboring contractors is their geothermal expertise, a niche few regional firms pursue. The website devotes a dedicated section to geothermal systems, positioning them as an economic and earth-friendly alternative to conventional heating and cooling. The company also offers certified backflow testing and repair, a compliance requirement for property owners that many HVAC-only contractors cannot perform. Customers in the testimonials reference Ron Whisker and other homeowners who specifically chose A. C. Rimmer for the breadth of credentials and the no-pressure estimate process.

Tom Tewell earns repeated recognition across customer reviews for his low-pressure sales approach. Cheri Uhrinek describes how Tewell walked her through options for replacing a 32-year-old AC unit without making her feel defensive about waiting to decide. Daniel Bordner similarly praises the installation crew for meticulous work, clean setup, and thorough equipment operation training. When Brett Dolimpio needed an urgent replacement, A. C. Rimmer even loaned a portable AC unit to bridge the gap, a gesture reviewers cite as proof of trustworthiness. Ron Whisker, who spent decades in construction and facilities management, explicitly states he has seldom seen the quality delivered by this crew.

What Customers Say

All 36 reviewers award 5 stars, with multiple customers calling out estimator Tom Tewell by name for his patient, pressure-free consultations. Three reviewers mention the company's willingness to loan equipment during waiting periods, and three customers specifically note the installation crews left their homes cleaner than they found them.

Working Hours

SundayClosed
Monday7:30 AM–4 PM
Tuesday7:30 AM–4 PM
Wednesday7:30 AM–4 PM
ThursdayToday7:30 AM–4 PM
Friday7:30 AM–4 PM
SaturdayClosed

Services

Heating Systems Installation & Repair

Covers boilers, gas furnaces, oil furnaces, and heat pumps including annual maintenance and emergency repair for failed equipment.

Geothermal Heating & Cooling

Earth-friendly ground-source heat pump systems with low greenhouse emissions, highlighted as an economical long-term investment.

Cooling Systems & Dehumidification

Conventional central air conditioners, ductless split systems, and whole-home dehumidifiers to manage summer humidity in Central Pennsylvania homes.

Plumbing Services

Water heater installation, drain cleaning, water treatment systems, and certified backflow testing and repair by licensed master plumbers.

Duct Cleaning & Sealing

Professional duct cleaning to improve indoor air quality and airflow efficiency in existing residential and commercial systems.

Residential & Commercial Maintenance

Preventive maintenance agreements covering routine inspections, filter changes, and system tune-ups to extend equipment lifespan.

Radiant In-Floor Heating

Hydronic radiant floor heating systems installed as an alternative or supplement to forced-air heating for comfort-focused homeowners.

Frequently Asked Questions