D&T Heating & Cooling

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About D&T Heating & Cooling
With 217 reviews averaging a 4.9-star rating, D&T Heating & Cooling has earned a loyal following throughout Bear, Delaware and the broader New Castle County region. The company maintains weekday and weekend availability from 8 AM to 11 PM, responding to service calls from its headquarters at 2121 Bear Corbitt Road. Reviewers frequently mention scheduling convenience and the team's ability to arrive when promised, whether for routine tune-ups or urgent situations requiring immediate attention.
The contractor distinguishes itself through educational content that helps homeowners make informed decisions about their heating and cooling systems. Its website features a SEER calculator, an HVAC troubleshooter, and blog posts addressing how to select the right air conditioner, prepare for summer heat, and extend equipment lifespan. These resources suggest a company that invests in helping customers understand their systems beyond the service call itself.
Customer accounts consistently highlight specific technicians who provided exceptional service. One reviewer described Gary and Pat resolving months of heating problems left unsolved by another contractor, restoring comfort within days. Another mentioned Tyler's thorough explanations about maintaining their system and offering practical recommendations. A third recounted how their AC failed during extreme summer heat, describing Gary as knowledgeable, informative, and fair in pricing.
What Customers Say
All seven fully-viewable reviews award five stars, with customers citing rapid response during urgent situations, transparent pricing, and technicians who explain repairs clearly. Multiple reviewers note the team remembered their system history and provided personalized maintenance guidance.
Working Hours
| Sunday | 8 AM–11 PM |
| Monday | 8 AM–11 PM |
| Tuesday | 8 AM–11 PM |
| Wednesday | 8 AM–11 PM |
| ThursdayToday | 8 AM–11 PM |
| Friday | 8 AM–11 PM |
| Saturday | 8 AM–11 PM |
Services
Air Conditioning Repair & Maintenance
Diagnose cooling failures, perform tune-ups, and restore system performance using manufacturer-specified procedures.
Heating System Repair & Maintenance
Address furnace and heating equipment issues including ignition problems, thermostat malfunctions, and component failures.
Heat Pump Services
Maintain and repair heat pump systems for year-round heating and cooling efficiency.
System Installation & Replacement
Install new HVAC systems and replace aging equipment when repairs are no longer cost-effective.
Emergency HVAC Repairs
Provide urgent service for heating or cooling failures, including same-day appointments for critical situations.
Indoor Air Quality Solutions
Offer guidance on filtration, purification, and ventilation improvements for healthier home environments.
Preventive Maintenance Contracts
Offer scheduled service agreements that keep systems running efficiently and reduce unexpected breakdowns.