Expert Rooftop Unit Service & Replacement in Surrey

Surrey's go-to team for commercial rooftop unit repair, RTU replacement, and preventive RTU service on offices, retail centres, and light-industrial buildings. We carry parts for all major brands so most rooftop unit repairs are completed in a single visit.

(604) 337-1007 Get a Free Quote

A packaged rooftop unit is the workhorse of commercial building HVAC in Surrey. When one goes down, every tenant feels it within the hour. Our technicians know every RTU make and model on the market, carry a well-stocked van, and are authorised to handle refrigerant on-site so there's no waiting for a second crew to show up with gauges.

What We Handle

Seasonal RTU commissioning — spring cooling start-up and fall heating changeover
Refrigerant charge verification, leak detection, and legal refrigerant recovery
Compressor, contactor, and capacitor replacement
Heat exchanger inspection and cracked-cell carbon-monoxide testing
Economiser damper repair and controls calibration
RTU replacement and crane coordination for units over 10 tonnes
Multi-unit rooftop surveys with written condition reports for property managers

Signs You Need Us Now

These are the warning signs our technicians see most often in the field. If any of these sound familiar, don't wait for the full failure.

Unit is short-cycling (starts and stops every few minutes)
Supply air is not reaching setpoint temperature
Refrigerant line is icing over on the indoor coil
Compressor makes a grinding or banging noise on startup
Controls display a fault code that keeps resetting
Energy bills have jumped 20%+ with no change in building use

Equipment & Brands We Work With

We service all major commercial RTU brands including Carrier, Trane, Lennox, York, Daikin, Weathermaster, and Climate Master. Our vans stock common compressors, contactors, capacitors, gas valves, heat exchangers, and economiser actuators. For parts that aren't on the van, our Lower Mainland supplier network typically turns around same-day or next-morning delivery.

How We Work

Every RTU service call starts with a full system check: pressures, temperatures, amp draws, controls. We send you a digital report before we leave. For replacements, we handle all measurements, crane permits, gas permits, and electrical coordination. You get one point of contact from quote to commissioning.

Surrey Commercial HVAC Services doesn't sub out to random crews. Our own licensed technicians handle every step. When the job is done, you get a complete handover package: equipment manuals, warranty registration, service records, and a direct line to your account technician.

Common Questions

How often should a commercial RTU be serviced?

Most manufacturers recommend two service visits per year — one in spring before cooling season and one in fall before heating season. High-load or restaurant environments may need quarterly checks.

How long does an RTU replacement take?

A standard RTU swap takes one to two days depending on equipment size and crane access. We schedule around your business hours and have your building back to normal temperature the same day in most cases.

What brands of RTUs do you service?

All major commercial brands: Carrier, Trane, Lennox, York, Daikin, Climate Master, Weathermaster, and more. We stock common parts to reduce wait times.

Can you replace just the compressor instead of the whole RTU?

It depends on the unit's age and refrigerant type. A compressor swap on a newer unit using current refrigerants often makes sense. On a 15-year-old R-22 unit, a full replacement usually delivers better ROI.