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Claim This BusinessDiamond AC & Heating operates as a fully licensed HVAC contractor serving Phoenix and the East Valley, including Gilbert, Chandler, and Mesa. The company maintains 24-hour availability across all seven days and has built a substantial client base reflected in 590 client reviews averaging 4.3 stars. They handle both residential and commercial projects, with an emphasis on honest recommendations and transparent pricing.
The contractor distinguishes itself through specialized indoor air quality solutions, including humidification systems and air purifiers that address Phoenix's notorious dry climate. Their expertise extends to modern heat pump technology, offering installation, maintenance, and repair services for both traditional and ductless mini-split configurations. The company also provides seasonal preventive maintenance Tune-Ups designed to prevent equipment failures during extreme summer conditions.
Customer reviews highlight technician Lance, who arrived within hours during an urgent call when a homeowner's AC failed during Arizona triple-digit heat. Reviewers also call out technicians Alfred and Cory for transparent pricing explanations, with one customer noting they 'lay all costs out before they start the job.' Another reviewer praised technician Richard for photographing problem areas before beginning work, providing visual documentation of what needed attention.
Positive reviews frequently mention technicians Lance, Alfred, and Cory, with six reviewers specifically calling out fast arrival times during emergencies. The single 1-star review alleges incomplete repair work and questionable pricing tactics, while most other feedback cites diagnostic skill and transparency as strengths.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Diagnostic services, tune-ups, and repairs for all makes and models of cooling equipment, with seasonal prevention plans available.
Repair and maintenance for furnaces, heat pumps, and heating systems appropriate for occasional winter use in the desert climate.
Complete heat pump services including new installations, replacements, and maintenance for both ducted and ductless mini-split systems.
Humidification systems (evaporative and steam), air purifiers, and ventilation improvements for desert-specific air quality concerns.
New duct installations, existing duct cleaning, and duct repair services for both residential and commercial properties.
Thermostat installation and configuration for connected and smart-home HVAC control systems.
Dedicated services for commercial buildings including multi-unit systems, with specialized pricing for business clients.
24-hour emergency availability for sudden breakdowns, with same-day service availability documented in customer reviews.