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Claim This BusinessEnvirotemp Heating, Cooling, & Geothermal has served Clayton and the broader Delaware region since at least 2015, building a reputation as a specialized geothermal installer and service provider. The company holds a 4.8-star rating across 23 verified reviews, with customers consistently praising technical expertise and responsive service. Operating from Monday through Friday, the team handles residential geothermal installations, boiler replacements, and AC repairs for homeowners across Dover, Clayton, and surrounding communities in New Castle County.
What distinguishes Envirotemp is the transparency and educational approach taken by owner Mike during consultations. Multiple reviewers note that Mike inspected existing systems, presented several replacement options, and explained pros and cons without applying sales pressure. The company maintains a methodical approach to system overhauls, with lead installer Bob walking homeowners through new equipment operations, including smart thermostat integration, before job completion. This consultative model, combined with documented experience in older home installations, positions the company as a practical choice for homeowners weighing geothermal conversion or replacement.
Customer scenarios from verified reviews illustrate the company's responsiveness. When Bill Alston's geothermal unit failed during a summer heat wave, Envirotemp dispatched a technician within 8 hours and restored operation within 24 hours. Barbra Ferrell's family has relied on the same team since their original geothermal installation, appreciating the ongoing availability of multiple service options for both urgent andscheduled needs. Kevin Hamill's 20-year-old system replacement involved coordinated delivery and installation, with the crew described as thorough and professional.
All 23 reviews award 5 stars, with customers specifically praising same-day emergency response times, Mike's no-pressure consultation approach, and the company's willingness to present multiple repair or replacement options. Three reviewers mention geothermal systems by name, indicating a specialized service strength.
| Sunday | Closed |
| Monday | 8 AM–4:30 PM |
| Tuesday | 8 AM–4:30 PM |
| Wednesday | 8 AM–4:30 PM |
| ThursdayToday | 8 AM–4:30 PM |
| Friday | 8 AM–4:30 PM |
| Saturday | Closed |
Complete geothermal heat pump installation for new builds and retro-fit replacements, with options presented for homeowner consideration.
Diagnosis and restoration of existing geothermal systems, with documented response times during emergency situations.
Air conditioning repair services including diagnostic assessment and tune-ups for residential cooling systems.
Residential boiler installation and ongoing repair services, with documented experience in older home applications.
Complete HVAC system overhaul for aging units, including coordinated delivery scheduling and professional installation.
Integration and configuration of smart thermostats, including Ecobee setup and homeowner operation training.