Rehoboth Beach, DE Furnace Repair & Service
The HVAC and plumbing systems inside your home play a pivotal role in your life and providing you comfort. Custom Mechanical, a full-service contractor in Rehoboth Beach, Delaware, helps homeowners improve their quality of life by putting their comfort needs first. For more than four decades, we have continued to build on our reputation as being the best full-service contractor in Delaware.
Air Conditioning and Furnace Contractor in Rehoboth Beach, DE
Custom Mechanical recommends investing in an annual maintenance plan to ensure your air conditioner remains in good health. With an annual maintenance plan, our technicians will take care of any repairs and upkeep to ensure your air conditioner not only operates efficiently but also has a longer life.
Another benefit of an annual maintenance plan is that it'll also cover your heating system. During the cold winters in Delaware, you want to be sure you and your family are warm and cozy in your home. Keep in mind that Custom Mechanical also offers 24/7 emergency service, in case you do have a heating problem.
Plumbing Contractor in Rehoboth Beach, DE
While most homeowners leave the HVAC repairs to the professionals, many try to fix plumbing problems on their own without proper training. This can lead to a dangerous situation, where you could be risking expensive home repairs or even your health.
Custom Mechanical's technicians have the education and experience to complete any job to the highest of standards while adhering to all safety guidelines. From servicing your water heater to remodeling your bathroom, we offer a full range of plumbing services at a fair price.
Custom Mechanical's team of home service experts is proud to offer HVAC, and plumbing services to residents in Rehoboth Beach, Delaware. Whether you need a repair or a replacement, or if you just have a question, contact us today.
Recent Jobs and Reviews in Rehoboth Beach, DE
Rehoboth Beach, DE at a glance
Custom Mechanical has completed 20 jobs in Rehoboth Beach, DE between May 2026 and July 2026.
The most recent job was on July 7, 2026.
Job Locations and Reviews
Heather K.
Diagnosed refrigerant leak in outdoor coil of communicating HVAC system. System is out of warranty and requires replacement of both the outdoor coil and condensing unit. Provided estimate for complete outdoor unit replacement to restore system functionality.
Rehoboth Beach, DE 19971
Dylan L.
Responded to emergency no-cooling call for heat pump system showing error code on thermostat. Upon arrival, found 2015 original equipment communicating furnace and air handler installation in basement/attic configuration. Diagnosed system fault, cleared error code, and verified proper operation of heat pump components. Documented equipment condition with photos showing furnace unit with communicating technology, associated ductwork including 20x20 plenum, and PVC condensate drainage system. System restored to normal cooling operation.
Rehoboth Beach, DE 19971
Gregory S.
Completed scheduled cooling maintenance visit on Trane air handler unit located in crawlspace. Performed standard cooling system inspection including filter check, refrigerant level verification, electrical connection assessment, and condensate drain line evaluation. Unit operational and all components functioning within normal parameters at time of service.
Rehoboth Beach, DE 19971
Joshua R.
Responded to water leak investigation under residential structure near water heater and main shut-off valve. Upon inspection, identified failed pipe connection at plumbing assembly with compromised fitting integrity. Located source of leak at vertical pipe stack where brass fitting connected to deteriorated plastic pipe section showing significant wear and damage at connection point. Removed defective components including worn pipe segment with rough, damaged edges. Documented existing plumbing configuration featuring metal pipes, PVC sections, and ball valve assembly with evidence of previous repair attempts. Photographed failed components and overall system condition for reference. Recommended replacement of compromised fittings to restore system integrity and prevent continued water loss.
Rehoboth Beach, DE 19971
Kenneth N.
Responded to service call for Rinnai tankless water heater experiencing beeping alarm and complete loss of hot water. Upon inspection, determined the 2013 unit had reached end of service life and required full replacement. Installed new tankless water heater system with proper venting through white PVC exhaust assembly, including curved elbow connections and wall-mounted termination. Completed installation of expansion tank with pressure relief components, integrated main water line connections with brass shut-off valves for both hot and cold supply lines, and installed flexible connector hoses for proper system operation. All plumbing connections tested and verified leak-free, unit operational and providing hot water upon completion.
Rehoboth Beach, DE 19971
Derrick J.
Responded to no cooling complaint on residential HVAC system. Upon arrival, accessed system in utility space and performed diagnostic evaluation. Measured supply air temperature registering 51.87°F, indicating adequate cooling performance. Inspected air filter measuring 16x20x1 and found moderate dust accumulation restricting airflow. Replaced dirty filter with new unit to restore proper system airflow and efficiency. Verified system operation and confirmed adequate cooling delivery throughout occupied space. System returned to normal operation after filter replacement.
Rehoboth Beach, DE 19971
Derrick J.
Performed routine cooling maintenance visit on multi-system HVAC installation. Inspected outdoor condensing unit, verified operational status of all components, and confirmed thermostat programming and temperature control functionality. All systems operating within normal parameters at time of service.
Rehoboth Beach, DE 19971
Edward M.
Completed full HVAC system replacement including removal and disposal of existing equipment. Installed new Lennox ML14KC1-024 2-ton 14 SEER condensing unit on pressure-treated wood platform with new outdoor disconnect and electrical whip. Installed Lennox CBK45UHET-030 air handling unit in attic space, suspended from structural framing with appropriate support chains. Fabricated and installed metal duct transitions to adapt new equipment to existing ductwork system. Reused existing condensate drain lines and power supply lines where serviceable. Installed Honeywell digital WiFi thermostat for system control. Verified proper refrigerant charge, airflow, and electrical connections. System tested and operational with one-year parts warranty coverage provided on complete installation.
Rehoboth Beach, DE 19971
David A.
Completed full residential HVAC system replacement consisting of three independent climate control systems. Removed and properly disposed of all existing equipment, then installed new Lennox systems with metal duct transitions adapted to existing ductwork while reusing existing condensation lines. **System 1 - Garage/Downstairs Main:** Installed Lennox EL297DF110XV60 97% variable speed gas furnace paired with ML14KC1-059 5-ton 14 SEER air conditioner, CK40DT-50/60C evaporator coil, LP conversion kit, and Aprilaire 2200 filtration system. Mounted Honeywell digital WiFi thermostat in downstairs hallway for zone control. **System 2 - Billiards Room Closet/Upstairs Main:** Installed Lennox EL297UH090XE48 97% ECM gas furnace with ML14KC1-048 4-ton 14 SEER air conditioner, CK40CT-48C-71 evaporator coil, LP conversion kit, and Aprilaire 2200 filter. Configured Honeywell digital WiFi thermostat for independent upstairs climate management. **System 3 - Pool Room System:** Installed Lennox ML
Rehoboth Beach, DE 19971
Dylan L.
Completed warranty repairs on two American Standard air handler units. First repair: replaced failed EEV control board on unit model TAM9A0C36V31DAA to restore proper electronic expansion valve operation. Second repair: replaced leaking evaporator coil and tubing assembly on unit model TAM9A0C42V41DAA (system 1, right air handler in garage). Verified refrigerant charge using digital scale, confirmed proper system operation, and tested all controls post-repair.
Rehoboth Beach, DE 19971
Heather K.
Completed HVAC estimate for replacement of existing 2-ton Trane system originally installed in 2009. Unit located in attic with access via second-floor ceiling requiring ladder access. Assessed current outdoor condenser positioned on wooden platform with brick wall mounting and evaluated replacement options for complete system upgrade.
Rehoboth Beach, DE 19971
Derrick J.
Responded to no cooling complaint on residential HVAC system. Upon arrival, performed diagnostic assessment using digital measurement tools to evaluate system performance. Temperature readings indicated significant differential issues, with measurements showing 12.7°F and 52.6°F at critical test points. Conducted thorough inspection of refrigeration system components and airflow parameters in attic-mounted equipment. Identified root cause of cooling failure and completed necessary repairs to restore proper system operation. Unit tested and verified return to normal cooling capacity before departure.
Rehoboth Beach, DE 19971
Kenneth N.
Completed full installation of Rinnai RX199iN1 tankless water heater system in utility room. Mounted unit to wall with proper clearances and connected to existing water supply lines using IPS service valves and copper piping with shut-off valves for isolation and maintenance access. Installed expansion tank to protect system from thermal expansion. Configured gas supply line using 3/4" x 5' flexible gas connector and black iron fittings including union, tee, reducer, nipples, cap, and brass ball valve for proper gas delivery and code compliance. Installed concentric venting system through exterior wall for combustion air intake and exhaust. Connected electrical supply and programmed unit settings. Integrated white PVC piping for condensate drainage. All connections pressure tested and verified leak-free. System activated, tested for proper operation, and confirmed adequate hot water delivery and temperature control. Installation meets manufacturer specifications and local plumbing code
Rehoboth Beach, DE 19971
Edward M.
Rehoboth Beach, DE 19971
Derrick J.
Responded to no cooling complaint with ongoing freezing issues. Performed diagnostic inspection using thermal imaging camera to assess system components and refrigerant lines. Advised homeowner to ensure all supply registers remain open and unobstructed to maintain proper airflow and prevent future freeze-ups.
Rehoboth Beach, DE 19971
Derrick J.
Responded to no cooling complaint for upstairs zone not maintaining set temperature. Accessed attic-mounted air handler to diagnose system performance issue. Inspected HVAC equipment, ductwork connections, and return air pathway. Documented existing system conditions including air handler installation, flexible duct routing, and return air grille configuration for 10+ year old system requiring further evaluation of cooling capacity and airflow distribution.
Rehoboth Beach, DE 19971
Derrick J.
Completed scheduled cooling maintenance visit on residential HVAC system. Performed comprehensive electrical diagnostics using digital multimeter, recording voltage readings of 120.8V and 154.7V at various system components to verify proper electrical supply and operation. Inspected wiring connections, tested system performance parameters, and confirmed all cooling equipment operating within normal specifications.
Rehoboth Beach, DE 19971
Frankie C.
Completed full HVAC system replacement including removal and disposal of existing equipment. Installed new Carrier 59SC2E100M21 92% AFUE gas furnace with LP conversion kit, Carrier 26SCA560W003 5-ton 15 SEER air conditioning condenser, and Carrier CAAMP6121AMA evaporator coil. Fabricated and installed metal duct transitions to adapt new equipment to existing ductwork. Reused existing condensate drain lines while replacing outdoor electrical disconnect and electrical whip for code compliance. Constructed pressure-treated wood platform and positioned outdoor condenser unit with proper clearances. Installed Honeywell digital WiFi thermostat for system control. Tested all system functions including heating and cooling cycles, verified proper refrigerant charge, confirmed adequate airflow, and ensured all electrical connections meet manufacturer specifications.
Rehoboth Beach, DE 19971
Federico P.
Completed full HVAC system replacement including removal and disposal of existing equipment. Installed new Carrier 27SCA524A003 2-ton 15 SEER heat pump on pressure-treated wood platform with Carrier FJ5ANXB24L00 air handler and 10kW electric heat pack in basement utility area. Fabricated and installed metal duct transitions to adapt new equipment to existing ductwork, reused existing condensate drain lines, replaced outdoor disconnect and electrical whip, and installed 14x24x1 filter grille and Honeywell TH6320WF digital WiFi thermostat for system control.
Rehoboth Beach, DE 19971
Steve W.
Responded to request for system replacement estimate on 15-year-old straight AC with gas furnace. Identified refrigerant leak at evaporator coil during inspection. Documented existing Lennox outdoor unit installation and captured site conditions for replacement proposal preparation.
Rehoboth Beach, DE 19971
