Selbyville, DE
Selbyville, DE, has the kind of small-town character that makes people stay. What nobody signs up for is a heating system that quits in January or an air conditioner that surrenders in the middle of a Delaware heat wave. Custom Mechanical has been solving exactly those problems for Delmarva homeowners since 1981, building a reputation across Sussex County on three simple principles: show up fast, fix it right and treat every customer like a neighbor. In Selbyville, DE, that's not a marketing line. It's how we've done business for decades when delivering our honest heating and air conditioning services.
Slash Energy Bills With an Air Conditioning Service Plan in Selbyville, DE
Energy costs across the mid-Atlantic have climbed steadily over the past decade, and an inefficient HVAC system is one of the fastest ways to feel that pressure in your monthly budget. A neglected air conditioner can quietly consume up to 40% more electricity than a well-maintained AC system, turning every degree of comfort into an unnecessarily expensive proposition. Custom Mechanical's air conditioning service visits go well beyond a basic tuneup, encompassing full system diagnostics, coil cleaning, refrigerant verification, electrical testing, and airflow balancing that collectively restore efficiency and reduce operating costs. For Selbyville, DE, homeowners who want to take control of their energy bills, a scheduled AC service visit is the most cost-effective first step available.
24/7 Emergency Heating and Air Conditioning Response in Selbyville, DE
HVAC systems have a well-documented tendency to fail at the worst possible moments. Custom Mechanical offers 24/7 emergency heating and air conditioning service precisely because comfort emergencies don't follow a business schedule. Our service technicians arrive prepared, with fully stocked vehicles carrying the parts and tools needed to handle the most common system failures on the spot. First-visit resolution is a goal and standard we hold ourselves to because we understand what it means for a Selbyville family to be without heat or cooling while waiting on a return visit. Whether it's a furnace that won't ignite, a compressor that's seized or an air handler throwing error codes at midnight, Custom Mechanical answers the call every single time.
Build Long-Term Reliability With a Whole-Home Comfort Assessment
Many homeowners in established communities like Selbyville are living with HVAC systems and plumbing infrastructure that have quietly aged past their optimal performance window. Equipment that still technically runs isn't necessarily equipment that runs well, and the gap between "operational" and "efficient" can represent hundreds of dollars in wasted energy costs every year. Custom Mechanical's whole-home comfort assessments give Selbyville residents a clear, honest picture of where their systems stand today and what steps make the most sense for long-term performance and reliability.
Call Custom Mechanical to learn more about the heating and air conditioning services we offer in Selbyville, DE, including emergency HVAC repairs and installations.
Recent Jobs and Reviews in Selbyville, DE
Job Locations and Reviews
Steve W.
Evaluated 16-year-old HVAC system in attic installation that was out of refrigerant. Inspected air handler unit, flexible ductwork, and attic access for replacement estimate. Documented existing equipment configuration and installation conditions to provide comprehensive system replacement quote.
Selbyville, DE 19975
David A.
Completed full HVAC system replacement for mobile home, removing and disposing of existing equipment. Installed MG2R-72B 95% efficiency furnace, 27SCA542 3.5-ton heat pump outdoor unit on ground-level wooden platform, and 3.5-ton mobile home heat pump coil. Furnished and installed electrical whip with disconnect box, flushed and pressure tested refrigeration lines, and recharged system to manufacturer specifications. Utilized existing thermostat for system control. All equipment installed per manufacturer guidelines with one-year parts warranty coverage.
Selbyville, DE 19975
Dylan L.
Replaced water-damaged 6" flexible ductwork in crawlspace located beneath the rear sliding glass door. Removed compromised flex line and installed new insulated flexible duct, properly secured with fabric straps to floor joists. Verified proper airflow and system operation upon completion.
Selbyville, DE 19975
Dennis K.
Responded to insufficient airflow complaint on upstairs system serving addition above garage. Inspected attic ductwork and found mixed installation with combination of new and existing duct runs. Evaluated flex duct routing, insulation integrity, and airflow distribution throughout the system to identify restrictions affecting conditioned air delivery to the addition space.
Selbyville, DE 19975
Dennis K.
Responded to no cooling call on residential HVAC system less than 10 years old. Upon arrival, performed diagnostic evaluation of attic-mounted air handler and associated ductwork system. Inspected unit operation, verified proper airflow through flexible duct runs, and checked electrical connections at equipment and attic ventilation fan. System evaluated and customer advised of findings requiring repair work exceeding minimum service threshold. Documentation completed with photographic records of attic installation, including air handler placement, flex duct routing, and overall system configuration.
Selbyville, DE 19975
Dylan L.
Replaced outdoor evaporator coil on upstairs HVAC system under warranty coverage. Two-technician job required four hours to complete the coil replacement, including recovery of refrigerant, removal of failed coil, installation of new coil, vacuum and leak testing, and refrigerant recharge. Defective coil was returned to warehouse per warranty requirements, and system was tested to verify proper operation upon completion.
Selbyville, DE 19975
Dylan L.
Responded to no cooling complaint on zoned HVAC system. Found tripped breaker which was reset by customer prior to arrival. Troubleshot zone control system and discovered first floor zone damper potentially stuck, preventing proper airflow distribution. Inspected zone control board displaying DAT sensor reading of 52°F and verified proper wiring connections to zone dampers and thermostat. Coordinated with Ecobee thermostat technical support to rule out thermostat programming issues. System operational at time of departure with all zones responding appropriately.
Selbyville, DE 19975
Dylan L.
Completed reinspection of HVAC system following previous service visit. Inspected outdoor disconnect box and electrical connections, verifying proper wire terminations and component functionality. Documented existing Turbo200 capacitor installation with all electrical connections secure and operational. System operating within normal parameters.
Selbyville, DE 19975
Dylan L.
Performed re-inspection of single cooling system as requested. Conducted comprehensive electrical diagnostics using digital multimeter, measuring voltage and capacitance readings to verify proper system operation. All electrical components tested within normal operating parameters, capacitor readings confirmed at acceptable levels, and system found operating efficiently with no deficiencies noted.
Selbyville, DE 19975
Dylan L.
Responded to no cooling and humidity complaint on residential HVAC system. Found heavily soiled air filter restricting airflow, causing reduced cooling capacity and inadequate dehumidification. Replaced dirty filter with new filter media. Verified thermostat operation showing 77°F setpoint with system in cooling mode and fan set to auto. System restored to proper operation with improved airflow and cooling performance.
Selbyville, DE 19975
Federico P.
Removed and disposed of existing ductless heat pump system. Installed new Mitsubishi SUZ-AA12NL outdoor heat pump unit on existing wall bracket with surge disconnect. Mounted SLZ-AF12NL ceiling recessed fan coil with SLP-18FAU grille in attic space. Utilized existing refrigeration lines, condensation drain, and low voltage wiring to minimize invasive work. Flushed and pressure tested refrigeration lines to ensure system integrity, then recharged system to manufacturer specifications. Installed MHK2 wireless receiver and PAC-USWHS0002-WF-2 WiFi interface for remote control and monitoring capabilities. Connected condensate pump with proper drainage routing through attic joists. Verified all electrical connections, tested system operation across heating and cooling modes, and confirmed proper refrigerant pressures and temperatures using manifold gauges. System commissioned successfully with all components functioning within normal parameters.
Selbyville, DE 19975
Ryan F.
Completed installation of Honeywell automatic zone damper system for first floor cooling issue. System included HZ432 zone control board, ARD10TZ 10" round damper, ARD8 round bypass damper, ZD8X8 and ZD8X14 zone dampers, THM400R1000 wireless adapter, TH8321R1001 RedLink thermostat, and THM6000R7001 RedLink equipment interface. Zone dampers installed in ductwork to regulate airflow distribution throughout multiple zones. Bypass damper installed to maintain proper static pressure when zones close. Wireless thermostat mounted and programmed, currently displaying 68°F indoor temperature with setpoint of 80°F in cooling mode. Zone control board wired and configured to communicate with thermostat and damper actuators. System tested and verified proper operation of all zone dampers, thermostat communication, and cooling cycle. One-year labor warranty provided on installation.
Selbyville, DE 19975
Dylan L.
Performed routine maintenance and tune-up on 8-year-old ductless mini-split system. Conducted comprehensive inspection of indoor unit, verified proper operation, and measured supply air temperature at 55.9°F and return air temperature at 78.9°F, confirming adequate cooling performance. System found to be operating within normal parameters with no repairs needed at this time.
Selbyville, DE 19975
Joshua R.
Responded to low water pressure complaint at upstairs shower following previous repair. Inspected shower valve and supply lines, identifying improperly seated shower arm connection. Removed existing shower arm, cleaned threads, applied fresh PTFE tape to ensure proper seal, and reinstalled fitting to manufacturer specifications. Restored full water pressure to fixture.
Selbyville, DE 19975
Frankie C.
Performed routine tune-up and inspection on residential cooling system. Verified thermostat operation and left set to 78°F cooling mode. Applied company identification stickers to HVAC equipment and water heater per homeowner request for upcoming property sale to ensure new owners have service contact information.
Selbyville, DE 19975
Edward M.
Responded to callback for downstairs zone overcooling issue following recent dual-zone thermostat installation. First floor temperature reading 66°F with thermostat set to 75°F, unit unable to maintain setpoint and continuously running cold. Upon inspection, discovered significant water damage and mold growth on bathroom ceiling directly below attic HVAC equipment, indicating possible condensate drain line failure or overflow. Inspected attic installation area and located PVC condensate drain lines routed through floor joists with vapor barrier present. Identified improper damper configuration or zone control malfunction causing first floor zone to receive excessive airflow regardless of thermostat call. Adjusted zone damper settings and recalibrated zone control board to balance airflow between upstairs and downstairs zones. Verified proper condensate drainage and cleared primary drain line. Advised customer of ceiling water damage requiring remediation and recommended monitoring syst
Selbyville, DE 19975
Dylan L.
# HVAC Cooling System Maintenance and Inspection Performed comprehensive cooling system maintenance visit on residential HVAC unit. Upon arrival, conducted thorough electrical diagnostics using calibrated testing equipment to verify proper system operation and electrical parameters. Measured voltage and amperage readings at the unit, with initial readings indicating 10.16 on the diagnostic meter. Inspected all electrical connections, terminal blocks, and wiring configurations within the unit, confirming proper wire terminations and secure connections across all phases. During inspection, identified significant frost accumulation on evaporator coil and associated components, indicating potential airflow restriction or refrigerant charge issue. Documented temperature reading of 53°F at the affected area using precision digital thermometer. The excessive frost buildup on coil surfaces and surrounding ductwork suggested system was operating outside normal parameters. Verified all electr
Selbyville, DE 19975
Coty B.
Removed and disposed of existing tank-style water heater and exhaust flue system. Installed new Rinnai RX199i tankless water heater unit with expansion tank, brass service valve kit, and 3/4" male high-temperature connections. Ran 40 feet of 2" PVC Schedule 40 pipe for exhaust venting system using four 2" PVC DWV 90-degree elbows, two 45-degree elbows, and two couplings to route flue piping from unit to existing roof penetration. Installed 2" concentric assembly with roof termination cap and waterproof boot at roof exit point. Connected all water supply lines, gas piping, and electrical components per manufacturer specifications. System tested and operational at 125 degrees, with all connections verified leak-free and unit functioning properly.
Selbyville, DE 19975
Joshua R.
Performed site assessment for water heater replacement in residential utility closet. Documented existing 24"W x 32"H tanked water heater installation with blue expansion tank connected via flexible corrugated metal hose. Verified available clearance space of 29" from existing copper pipe connections to wall to ensure proper sizing for replacement unit. Evaluated plumbing connections including shut-off valves with red handles and standard safety components. Confirmed adequate access in laundry area adjacent to washing machine for equipment removal and installation.
Selbyville, DE 19975
Dylan L.
Performed diagnostic evaluation on Mitsubishi mini split system installed on exterior deck. System inspection revealed refrigerant leak requiring recovery and nitrogen pressure testing to locate source. Scheduled follow-up appointment to complete refrigerant recovery and perform comprehensive nitrogen leak detection test on the system.
Selbyville, DE 19975
