HVAC Services in Tucson, AZ

A/C Repair in Tucson

A reliable air conditioning system is essential in Tucson. When the A/C stops cooling, a home or business gets uncomfortable fast — and in July it can get dangerous. D&C Maintenance diagnoses the problem and repairs it fast, 24/7.

We work on residential and commercial systems — split systems, package units and rooftop units — and explain what failed and what it costs before we fix it.

What we fix

• Capacitors, contactors and electrical faults
• Refrigerant leaks and low charge
• Frozen coils and drain problems
• Thermostat and control issues

Call if your A/C is…

• Blowing warm air or not turning on
• Running all day without cooling
• Making new noises or tripping the breaker

A/C Repair — full details →

Heater Repair & Heating Service

Desert nights get cold. If your heater struggles, blows cool air or stops working, we inspect the system and recommend a practical repair so your home or business is warm again — without unnecessary delays.

Gas furnaces, electric heat and heat strips — clear communication and a dependable fix.

We service

• Gas furnaces
• Electric heat and heat strips
• Ignition, flame sensor and blower problems
• Thermostats

Signs it needs service

• Blowing cool air on heat
• Short cycling or not turning on
• Burning smell that doesn't go away

Heater Repair — full details →

Heat Pump Repair

A heat pump heats and cools, so when it struggles you feel it all year. If it isn't keeping up, cycles too often or won't switch between heating and cooling, D&C Maintenance repairs heat pumps of all types for homes, offices and commercial spaces.

We diagnose

• Reversing valve and defrost problems
• Heating, cooling and cycling issues
• Electrical and control faults
• Refrigerant leaks

Heat Pump Repair — full details →

New HVAC System Installation

Replacing an old or inefficient unit can feel like a big decision — but an outdated system often costs more through repairs, poor cooling and higher bills. A properly selected new system improves cooling, indoor air quality and long-term value.

Split systems, package units and commercial rooftop units — including lineset insulation and safety switch installation, done by our own technicians.

Every install includes

• A system sized for the building and the Tucson heat
• Lineset insulation and safety switch
• Startup testing and a walkthrough

System Installation — full details →

Mini-Split Installation & Service

Mini-splits cool and heat a single room, an addition, a garage or a casita without ductwork — and they're efficient. We install, repair and service mini-split systems for homes and businesses.

Great for

• Garages, workshops and casitas
• Room additions and hot rooms
• Offices and small commercial spaces

Mini-Splits — full details →

Fan & Blower Motor Replacement

When a fan motor starts to fail, the system runs inefficiently, gets noisy or stops moving air. We inspect the motor, confirm whether it needs replacing, and restore strong, steady airflow — including blower wheel repair.

Signs of a failing motor

• Weak airflow from the vents
• Humming, grinding or squealing
• Outdoor fan not spinning

Fan Motor Replacement — full details →

Pre-Season A/C Tune-Up & Coil Cleaning

The best time to find a problem is before the first 110° day. A pre-season tune-up checks the electrical parts, refrigerant and airflow, and our coil cleaning restores the heat transfer that dust and monsoon debris steal from your system.

A tune-up covers

• Evaporator and condenser coil cleaning
• Electrical and capacitor check
• Refrigerant and airflow check
• Drain line and filter

Pre-Season Tune-Up — full details →