Our Services
HVAC, ductwork, electrical, generator, boiler and water-heater services throughout Montgomery, Bucks and Philadelphia Counties.
HVAC Installation & Replacement Services
At DMES LLC, we install and replace residential and light-commercial HVAC/R systems with close attention to equipment selection, airflow, energy efficiency, and long-term reliability. We evaluate the existing system and the needs of the property, explain practical options, and complete each installation according to manufacturer requirements and applicable codes.
- Central air-conditioning installation and replacement
- Heat-pump installation and replacement
- Furnace installation and replacement
- Air-handler and evaporator-coil installation
- Mini-split and multi-zone system installation
- Packaged and rooftop HVAC equipment
- Thermostats, controls, and compatible accessories
- Refrigerant piping and condensate drainage
- Equipment startup, testing, and system commissioning
- Residential and light-commercial HVAC/R installations
HVAC/R Repair & Maintenance Services
DMES LLC diagnoses and repairs heating, cooling, ventilation, and refrigeration equipment that is not operating properly. We take a systematic approach to troubleshooting so the actual cause of the problem can be identified before repairs are recommended.
- Air-conditioning diagnostics and repair
- Heating and furnace diagnostics and repair
- Heat-pump repair and service
- HVAC/R electrical and control troubleshooting
- Capacitors, contactors, relays, motors, and related components
- Thermostats and control-system problems
- Refrigerant-system diagnostics and leak investigation
- Airflow and temperature-performance problems
- Condensate drain and overflow problems
- Seasonal inspection and preventive maintenance
- Indoor-air-quality and comfort-related troubleshooting
- Residential and light-commercial HVAC/R service
Ductwork Services
DMES LLC understands that properly designed and installed ductwork is essential to the performance of a heating and cooling system. Poorly sized, damaged, leaking, or improperly arranged ducts can restrict airflow, create uneven temperatures, increase operating costs, and prevent new equipment from performing correctly.
- Residential and commercial ductwork installation
- Sheet-metal trunk lines, branches, transitions, and fittings
- Supply-air and return-air duct systems
- Duct modifications for replacement HVAC equipment
- Replacement of damaged, undersized, or deteriorated ductwork
- Airflow corrections and distribution improvements
- Dampers, access sections, and equipment transitions
- Duct sealing and insulation where applicable
- Ductwork for additions, renovations, and system upgrades
Electrical Systems Services
DMES LLC provides a broad range of residential and light-commercial electrical services, from troubleshooting an existing problem to installing the electrical infrastructure required for new equipment. Our combined electrical and mechanical experience is especially valuable on projects involving HVAC equipment, generators, battery systems, controls, and other building systems.
- Electrical troubleshooting and repairs
- Electrical-panel replacement and service upgrades
- Subpanels and distribution equipment
- Dedicated circuits for appliances and mechanical equipment
- Lighting, switches, receptacles, and new circuits
- Equipment disconnects and electrical connections
- HVAC and boiler electrical feeds and controls
- Generator and battery-backup electrical work
- Code corrections and replacement of damaged components
- Residential and light-commercial electrical installations
Generator Services
Power outages can leave homes and businesses without heating, cooling, refrigeration, lighting, communications, sump pumps, and other essential equipment. DMES LLC installs, replaces, services, and connects standby generators and compatible battery-backup systems.
- Standby-generator installation and replacement
- Automatic transfer switches
- Generator electrical connections
- Generator maintenance and repair
- Load-management equipment
- Backup-power system troubleshooting
- Battery-backup and energy-storage systems where compatible
- Electrical integration of battery-backup equipment
- Generator and battery-system disconnects and protection
- Residential and light-commercial backup-power projects
Boiler Services
DMES LLC services and installs boilers and hydronic heating systems for residential and light-commercial properties. Hydronic systems rely on the proper operation of the boiler, piping, pumps, controls, zones, and heat-distribution equipment.
- Boiler diagnostics and repair
- Boiler installation and replacement
- Hydronic heating-system service
- Circulator pumps and system controls
- Zone valves, relays, and thermostats
- Expansion tanks and related components
- Baseboard, radiator, and hydronic distribution problems
- Domestic hot-water coils where applicable
- Boiler inspection and maintenance
- Residential and light-commercial boiler systems
Water Heater Services
Water-heater service is an important part of the mechanical work offered by DMES LLC. We install, replace, diagnose, and repair conventional tank, tankless, and heat-pump water heaters for residential and light-commercial applications.
- Water-heater diagnostics and repair
- Conventional tank water-heater installation and replacement
- Electric water-heater service
- Gas water-heater service
- Tankless water-heater installation and service
- Heat-pump water-heater installation and service
- Water-heater controls and electrical connections
- Expansion tanks and related equipment where required
- Emergency water-heater replacement
- Residential and light-commercial water-heating equipment
Qualifying customers may be eligible for financing on HVAC system installations and replacements. Ask about Synchrony financing options when you request your estimate.
Ready to Get Started?
Contact DMES LLC for a free estimate on your next project.