RJM Systems Group — HVAC for Chester County, PA
A Chester County, PA HVAC company founded by Richard Davis — providing heating, cooling, indoor-air-quality, and commercial HVAC services across West Chester, Downingtown, and Kennett Square.
- Lifetime WarrantiesFor the ultimate peace-of-mind for as long as you own your home
- Verified PerformanceStatic pressure + CFM measured on every install
- Upfront Flat-Rate PricingPrice agreed before any tool is lifted
- Daikin Pro DealerPremium equipment, factory-trained installers
RJM Systems Group, at a glance.
RJM Systems (formerly R&J Mechanical Services) is a Chester County, PA HVAC company founded in 2019 by Richard and Julie Davis, providing heating, cooling, indoor-air-quality, and commercial HVAC services across West Chester, Downingtown, Kennett Square, and the greater Delaware Valley. We are licensed HVAC contractors in Pennsylvania and New Jersey, a factory-authorized Daikin dealer, and EPA 608 certified.
Headquartered at 675 Tower Lane, Unit C, West Chester, PA 19380, we dispatch technicians across ten counties in PA and NJ. RJM offers service, installation, sales, and design in both residential and commercial settings — with 150+ combined years of technician experience and Lifetime Warranties on installation workmanship.
Six core values that guide every job
Our promise to our clients and to our team is to stand by our core values.
Safety
We believe safety is the frontline of our decision-making and actions. We take the right steps to keep our clients and ourselves safe.
Customer-Focused
The client comes first. We put ourselves in our client’s shoes and view things from their perspective. By listening, we get a better understanding of their needs — which helps us find the right solution.
Innovation
Good is never enough. We seek ways to raise the bar and challenge complacency to generate the best solutions.
Excellence
We work to the best of our ability. We are committed to giving high-quality performance that produces outstanding, lasting results.
Integrity
We do what is right and deliver what we promise.
Teamwork
Working as a team we make better decisions, and our work is more efficient. We work together to win together.
The highest standards. No exceptions.
Half of these are about the experience inside your home. The other half are about the engineering inside your system. We hold both to the same standard.
Real people who treat your home like family.
Clear updates, honest answers, no jargon.
Floors protected. Jobsite cleaner than we found it.
If something’s off, we fix it. Always.
Root-cause fixes, not symptom swaps.
Even comfort — room-to-room, floor-to-floor.
Same-day calls for no-heat and no-AC.
For the ultimate peace-of-mind for as long as you own the home.
* With active RJM ProCare Membership. Performance and Signature installation packages.
Licensed, certified, and accountable.
We carry the licenses and certifications that protect you — and we publish them.
- Daikin Pro Dealer
- PA-licensed HVAC contractor
- NJ-licensed HVAC contractor
- EPA 608 Certified technicians
- Fully insured & bonded
- BBB-monitored business
About RJM Systems Group.
›Who is RJM Systems Group?
RJM Systems (formerly R&J Mechanical Services) is a Chester County, PA HVAC company founded in 2019 by Richard and Julie Davis, providing heating, cooling, indoor-air-quality, and commercial HVAC services across West Chester, Downingtown, Kennett Square, and the greater Delaware Valley. We are licensed HVAC contractors in Pennsylvania and New Jersey, a factory-authorized Daikin dealer, and EPA 608 certified.
›Where is RJM Systems Group located?
RJM Systems is headquartered at 675 Tower Lane, Unit C, West Chester, PA 19380. Our technicians dispatch from our West Chester facility across Chester, Delaware, Lancaster, York, Montgomery, Bucks, and Berks counties in Pennsylvania, plus Gloucester, Camden, and Burlington counties in New Jersey.
›Who founded RJM Systems Group?
RJM Systems Group was founded in 2019 by Richard and Julie Davis. The company was formerly known as R&J Mechanical Services. Richard leads the company today, and RJM is family-rooted with a 150+ combined years of technician experience across the team.
›What licenses and certifications does RJM Systems Group hold?
RJM holds active HVAC contractor licenses in Pennsylvania and New Jersey, EPA 608 refrigerant handling certification for every technician, factory-authorized Daikin dealer status, and full commercial insurance and bonding. We are BBB-monitored and publish our credentials on the site.
›What makes RJM Systems Group different from other HVAC companies in Chester County?
Three things. First, we are actually local — dispatched from West Chester, PA, with technicians who live in Chester County (not a franchise call center). Second, every install is engineered rather than swapped — heat-loss / heat-gain calculations, airflow verification, static-pressure measurement, and documented commissioning. Third, RJM installation workmanship is backed by a Lifetime Warranty for as long as you own the home and keep an active ProCare Membership.
Meet a different kind of HVAC company
See for yourself why so many homeowners trust RJM.