Commercial HVAC preventive maintenance and upkeep · Updated October 14, 2026

Commercial HVAC preventive maintenance in Greater Montréal: fewer breakdowns, a lighter bill, a compliant building.

Rooftop units, heat pumps, VRF, air exchangers, commercial refrigeration: we maintain your equipment on a fixed schedule, with a report and the legally required logbook after every visit. Everywhere in Montréal, Laval, Longueuil, on the South Shore and the North Shore.

Once / yearWorkplace mechanical ventilation inspected and adjusted, at a minimum.ROHS, s. 104
15 monthsMaximum interval between two leak tests, equipment of 20 kW and up.Halocarbons Reg., s. 22
5 to 20%in energy bill savings targeted by efficiency-focused maintenance.U.S. DOE, FEMP, 2010
RBQ5645-9605-01 · subclasses 15.8, 15.10 and 16
24 hto receive your written quote
$5Min civil liability insurance
$0for the on-site estimate
01 · Understanding why preventive maintenance matters

Commercial preventive maintenance and upkeep services throughout Greater Montréal, Laval, Longueuil, the South Shore and the North Shore

Preventive maintenance is planned, regular care that keeps your HVAC systems performing at their best and prevents breakdowns. When it’s neglected, a system breaks down more often and uses more energy: two costs that hit your company’s bottom line directly. AirGreen combines the experience of its refrigeration technicians with a customer-focused approach to keep your equipment reliable all year long.

A longer service life

Wear parts replaced on time protect the compressor and motors, the most expensive components.

Better energy efficiency

Clean filters and coils: the unit reaches its set point without straining.

Lower utility costs

Less electricity used for the same comfort, month after month.

Fewer costly breakdowns

Wear shows up during inspection, well before a shutdown in the middle of a heat wave or a deep freeze.

Healthy, comfortable indoor air

Ventilation adjusted, filters maintained, condensate pans clean: less dust and fewer odours.

More productivity, less downtime

Employees and customers stay comfortable; the walk-in cooler holds its temperature.

How much efficiency-focused maintenance can cut from your bill

$5,000$500,000

Targeted annual savings by building type

Dark portion: 5% of the bill · full bar: 20%. Sample bills; replace them with yours using the slider.

Source: U.S. Department of Energy, FEMP, O&M Best Practices Guide, Release 3.0, 2010, section 2.4. Actual results depend on the equipment’s starting condition.

02 · Our complete preventive maintenance services

Five services, one visit done right: from the filter to the report.

HVAC systems play a central role in a business. Every maintenance visit goes through these five steps; tap one to see what we actually do.

Step 1 of 5

Routine inspections

Regular inspections, on a fixed schedule, to spot wear and fix it before it turns into a breakdown.

In practice

  • Visual inspection of every unit, from the roof to the mechanical room
  • Refrigerant pressures and temperatures measured
  • Contactors, capacitors and electrical connections checked
  • Controller error code history (VRF)
What you receive
The list of points to watch, unit by unit.
Commercial HVAC preventive maintenance and upkeep in Greater Montréal, Laval, Longueuil, the South Shore and the North Shore
AirGreen commercial preventive maintenance: from the roof to the mechanical room.

Checkpoints per unit, at every visit

Tap a bar
Filters replaced
A clogged filter cuts airflow and strains the fan.
Belts inspected and tensioned
A slipping belt wears the pulley and cuts airflow.
Condenser coils cleaned
A dirty coil drives up the pressure and the bill.
Drain and condensate pan cleared
Water that overflows ends up in the ceiling.
Economizer and fresh-air dampers checked
A stuck damper lets in too much or too little outdoor air.
Refrigerant pressures and temperatures measured
That’s where a leak or a low charge shows up.
Contactors, capacitors and electrical tightening
A common cause of shutdowns in the middle of a heat wave.
Thermostat and sequence of operation
Prevents heating and A/C from running at the same time.

Rooftop units with gas heating: the gas section is handled by a licensed partner.

03 · Our tailored approach

Every commercial building has its own needs. Explore yours, unit by unit.

We work with you to understand your needs, constraints and expectations, then adjust the maintenance strategy. Choose an example or your sector: the typical equipment lights up on the cross-section, and the planner below fills itself in.

Floor · offices Ground floor · restaurant Mechanical room Walk-in cooler 1 Rooftop units 2 Commercial refrigeration 3 VRF / VRV systems 4 Wall-mounted and multi-zone heat pumps 5 PTAC 6 Air handling units 7 Air exchangers and ventilation
Card 1 of 7

Rooftop units

It cools and ventilates an entire space from the roof, exposed to sun, wind and snow all year round.

4 visits per yearRegulation respecting halocarbons, s. 22Typical: restaurant

What we check

  • Filters replaced · A clogged filter cuts airflow and strains the fan.
  • Belts inspected and tensioned · A slipping belt wears the pulley and cuts airflow.
  • Condenser coils cleaned · A dirty coil drives up the pressure and the bill.
  • Drain and condensate pan cleared · Water that overflows ends up in the ceiling.
  • Economizer and fresh-air dampers checked · A stuck damper lets in too much or too little outdoor air.
  • Refrigerant pressures and temperatures measured · That’s where a leak or a low charge shows up.
Leak test at least once a year, no more than 15 months between tests
Air conditioning and refrigeration of 20 kW and over, and chillers.
Gas heating section: handled by a licensed partner.
04 · The planner

Three steps, one complete maintenance plan. Everything is calculated live.

Your sector pre-fills the most common equipment. Adjust the quantities: the number of visits, the seasons and the obligations update automatically.

1. Your sector

2. Your equipment

4 units

An estimate is enough: we take an exact inventory during the visit.

Rooftop unitsAir conditioning and ventilation on the roof
1
Wall-mounted and multi-zone heat pumpsOffices, stores, rooms
1
VRF / VRV systemsSeveral zones on a single circuit
0
Air exchangers and ventilationHRV, ERV, exhaust fans
0
Air handling unitsMechanical rooms, large spaces
0
PTACHotels, residences, private offices
0
Commercial refrigerationWalk-in coolers, counters, display cases
2

3. Four quick questions

Employees work in the building
A unit of 20 kW or more, or a chiller (20 kW ≈ 68,000 BTU/h ≈ 5.7 tons)
Gas heating, boiler or burner
A unit running on R-22
Your maintenance plan
4visits / year

One per season: rooftop units and commercial refrigeration need clean filters and coils all year round.

Spring
Summer
Fall
Winter
Units covered4
Checkpoints per year104
Written reportafter every visit

Tasks by season

26Spring
26Summer
26Fall
26Winter

What the law requires here

Ventilation: inspected and adjusted at least once a year
ROHS, s. 104
Leak test at least once a year, no more than 15 months between tests (to be confirmed: we check the nameplate)
Regulation respecting halocarbons, s. 22
Service logbook, copy to the owner, kept 5 years
Regulation respecting halocarbons, ss. 59 and 60
The gas portion (burners, boiler) is handled by a licensed partner. We coordinate the visits.

Frequencies: our starting recommendation, confirmed during the visit. No prices are shown: every building is estimated on site, free of charge.

05 · The maintenance schedule

Twelve months, with your visits placed at the right times.

The schedule follows your plan. Tap a month to see what we do then, for your own equipment.

visit scheduled · current month

For your equipment this month

Based on the units in your plan.

  • Rooftop units · Refrigerant pressures and temperatures measured
  • Rooftop units · Belts inspected and tensioned
  • Wall-mounted and multi-zone heat pumps · Electrical connections checked
  • Wall-mounted and multi-zone heat pumps · Indoor coils and blower wheel cleaned
  • Commercial refrigeration · Leak test (20 kW and over) and logbook
  • Commercial refrigeration · Evaporator and defrost cycles
Your year, season by season

Each visit comes just before the season hits.

Your plan: four visits, one per season.

Sp

Spring · March to May

Air conditioning start-up

  • Cleaning of outdoor unit and condenser coils
  • Refrigerant pressures and temperatures measured
  • Drains and condensate pans cleared before the humid season
  • Filters replaced, airflow checked

Visit scheduled in April

Su

Summer · June to August

Peak heat

  • Filters replaced (units running full out)
  • Condensate, pumps and overflow alarms
  • Walk-in cooler temperatures and defrost
  • Belts, bearings and fans

Visit scheduled in July

Fa

Fall · September to November

Heating start-up

  • Heat pumps tested in heating and defrost mode
  • Air exchangers: core, filters, dampers and airflow
  • Annual leak test on units of 20 kW and over
  • Electrical inspection: contactors, capacitors, tightening

Visit scheduled in October

Wi

Winter · December to February

The dead of winter

  • Outdoor units and fresh-air intakes cleared of snow and ice
  • Filters replaced, exhaust vents checked
  • Abnormal frost and defrost cycles monitored
  • Thermostats and occupancy schedules adjusted

Visit scheduled in January

Two or four visits per year

The frequency follows your equipment, not a one-size-fits-all formula.

Our starting recommendation. We confirm it during the visit, based on each unit’s age, use and access.

Two visits per yearFour visits per year
Visits per year2: spring and fall4: one per season
For which equipmentWall-mounted and multi-zone heat pumps, VRF, air exchangers, PTACRooftop units, air handling units, commercial refrigeration
FiltersReplaced at every visitReplaced every season
Coils, drains, electricalInspected at every visitInspected at every visit
Leak test (20 kW and up)At the fall visitAt the fall visit
Ventilation adjustment (ROHS)At least once a yearAt least once a year
Report and logbookAfter every visit, copy providedAfter every visit, copy provided

Gas heating, boilers and burners: this part is handled by a licensed partner, with coordinated visits.

06 · Self-assessment

Nine honest questions. Your compliance and maintenance score, live.

An example is pre-filled. Tap “Start over” and answer for the building you manage: “I don’t know” counts as an item to check, not a failure.

1. The ventilation was inspected and adjusted in the last 12 monthsROHS, s. 104
2. Units of 20 kW and more passed their leak test less than 12 months agoHalocarbons Reg., s. 22 · 15 months max
3. You have a copy of the refrigerant service logbookHalocarbons Reg., ss. 59 and 60
4. Filters are changed on a fixed scheduleROHS, s. 104 · filters maintained as needed
5. The outdoor unit coils were cleaned this yearCompressor efficiency and lifespan
6. Drains and condensate pans were checked this yearWater damage and mould
7. You know which refrigerant each unit usesR-22, R-410A, R-32 or R-454B
8. Outdoor units and fresh air intakes are cleared for winterSnow, ice and leaves
9. A maintenance plan with fixed dates is in placeVisits scheduled before each season
Your score
35/ 100

Some items to address quickly.

9 answers of 9

Your actions, in order of priority

Schedule the leak test for units of 20 kW and more
Halocarbons Reg., s. 22 · 15 months max · to be checked
Get a copy of the logbook and keep it 5 years
Halocarbons Reg., ss. 59 and 60
Clean the outdoor unit coils
Compressor efficiency and lifespan
Clear the outdoor units and air intakes
Snow, ice and leaves
Set up a maintenance plan with fixed dates
Visits scheduled before each season
Note the refrigerant of each unit (nameplate)
R-22, R-410A, R-32 or R-454B · to be checked
07 · The telltale signs

Your system talks to you before it quits. Check off what you notice.

We tell you what it often means, what we do, and how urgent it is. Nothing replaces an on-site inspection.

The alarm goes off or the temperature rises in the walk-in cooler

Call now

What it often means

  • Dirty condenser or fan stopped
  • Evaporator iced up
  • Door gasket no longer seals

What we do

Priority service: we restore cooling, then fix the cause so it doesn’t come back.

Ice or frost on the piping

Schedule it soon

What it often means

  • Reduced airflow, often a clogged filter
  • Low refrigerant charge, possibly a leak
  • Faulty defrost cycle

What we do

We restore airflow, measure the charge and look for the leak with an electronic leak detector.

Leak confirmed: it must be sealed without delay, and a leaking unit can’t simply be recharged (Halocarbons Reg., ss. 8 and 11).

A new noise

Schedule it

What it often means

  • Worn or poorly tensioned belt
  • Fan bearing wearing out
  • Loose part or panel

What we do

We replace the wear part before it damages the motor or pulley.

08 · What the law requires

Commercial HVAC maintenance in Québec: the obligations under the ROHS and the Regulation respecting halocarbons, in one table.

RequirementWho it applies toFrequency or deadlineReference
Inspection and adjustment of mechanical ventilationEvery workplaceAt least once a yearROHS, s. 104
Ventilation filtersEvery workplaceMaintained or replaced as neededROHS, s. 104
Leak test with an electronic leak detector (5 g/yr)Air conditioning and refrigeration of 20 kW and up, chillersAt least once a year, no more than 15 months between two testsHalocarbons Reg., s. 22
New test after a leak repairThe same equipmentBetween the 30th and 60th day after being put back into serviceHalocarbons Reg., s. 22
Leak detectedAny equipment; recovery and assessment from 20 kWSealed without delay; from 20 kW, recovery and assessment within 48 hoursHalocarbons Reg., s. 11
Recharging a leaking unitRefrigeration and air conditioningProhibited (except under the exception in s. 12)Halocarbons Reg., s. 8
Refrigerant handlingAny workHolder of the environmental qualification certificateHalocarbons Reg., ss. 43 and 44
Service logbookNon-domestic unitsEvery service call; copy to the owner; kept 5 yearsHalocarbons Reg., ss. 59 and 60

Is your unit subject to the annual test?

Slide to the capacity shown on the nameplate. The yellow dot follows the curve.

20 kW · annual test mandatory above 1 ton10 tons20 tons30 tons100500
5 tonscapacity
60,000BTU/h
17.6 kWoutput
Under 20 kW: no mandatory annual test. The logbook is still required for any work on the refrigerant.
True or false

Seven common myths about maintenance and the law. Test yourself.

Each answer cites the section of the regulation.

1 correct out of 1

A 25 kW commercial air conditioner must undergo a leak test every year.

Correct. From 20 kW, at least once a year and never more than 15 months between two tests. (Halocarbons Reg., s. 22)

A leaking unit can be recharged as long as it still cools.

Mechanical ventilation in a workplace must be inspected and adjusted at least once a year.

The refrigerant service logbook can be thrown out after one year.

An R-22 system must be replaced immediately.

Any maintenance employee can add refrigerant.

After a leak is repaired, the unit must be tested again in the weeks that follow.

09 · Your deadlines

Enter a date. We’ll calculate the next one, starting from today.

Today: October 14, 2026. Dates recalculate every day; add them to your calendar.

Where you stand since your last leak test

Up to date
Last test: November 14, 202512 months: November 14, 202615 months: February 14, 2027
Leak test · s. 22

Units of 20 kW and over

123days before the legal deadline
Up to date
Recommended (12 months)November 14, 2026
Legal limit (15 months)February 14, 2027

At least once a year, never more than 15 months between two tests.

After a repaired leak · s. 22

The mandatory follow-up test

18days until the window opens
Too early to test
Window opensNovember 1, 2026
Window closesDecember 1, 2026

The follow-up test is done between the 30th and 60th day after the return to service.

Ventilation · ROHS, s. 104

Annual inspection and adjustment

30days overdue
Overdue by 30 days
Next one, at the latestSeptember 14, 2026

Every mechanical ventilation system in a workplace, at least once a year.

10 · Detailed reports after every visit

After every visit, a clear report. And the logbook the law requires.

AirGreen Climatisation et ChauffageSample · fictitious data
DateOctober 14, 2026
UnitRooftop unit No. 2
Serial number[SERIAL NO.]
RefrigerantR-410A · 0.0 kg added
Leak testNo leaks detected
Next test, at the latestJanuary 14, 2028
Filters replacedDone
Condenser coil cleanedDone
Fan belt: visible wearMonitor
Compressor capacitor out of toleranceTo correct
Drain and condensate panDone

Technician holding the environmental qualification certificate · No. [CERTIFICATE]

What the logbook must contain (s. 59)

  • The date and nature of the work
  • The location and serial number of the unit
  • The type of refrigerant and the quantity, in kilograms
  • The leak test results
  • The technician, their certificate number and their employer
You receive a copy. The logbook is kept for 5 years (s. 60). Our report adds what we inspected, what we found and what we recommend, with the status of each item.
Filters · coil · fan · pressures
See our commercial projects
Is your current logbook complete

On inspection day, your logbook is your best evidence. Check off what it contains.

Your logbook contains

3 / 7

4 items are missing. We complete the logbook at every visit.

Regulation respecting halocarbons, ss. 59 and 60. Required for any work on the refrigerant of a non-domestic unit.

11 · Your refrigerant

The refrigerant in your units changes your plan. Choose yours.

12 · Preventive or reactive

Repairing after the breakdown or preventing it beforehand: what changes for your business.

Without a plan: we fix it when it breaksWith an AirGreen plan
When we step inAfter the breakdown, often in the middle of a heat wave or a cold snap.On a fixed schedule, before each season.
The budgetUnexpected: parts, labour and sometimes closing your doors.Planned and spread over the year.
ComplianceTests and logbook done in a rush, whenever someone remembers.Leak test and ventilation adjustment scheduled, logbook up to date.
EnergyDirty filters and coils: the unit strains.Efficiency-focused programs: 5 to 20% savings on the bill (FEMP, 2010).
Customers and employeesDiscomfort, complaints, merchandise at risk.Steady comfort, walk-in cooler monitored.
Service lifeFaster wear on compressors and motors.Wear parts replaced before they damage everything else.
13 · Why choose AirGreen for preventive maintenance

Your choice of HVAC contractor shows in comfort, efficiency and operating costs.

Expertise and experience

Experienced refrigeration technicians who know rooftop units, VRF, commercial refrigeration and ventilation. They know where to look, and what to measure.

Customer satisfaction

From the first call to the end of the visit: a free on-site estimate, a written quote within 24 hours, a final offer before the work and a clear report after every visit.

Eco-friendly solutions

A well-tuned system uses less energy and shrinks your environmental footprint. Refrigerant leaks are tracked down with an electronic leak detector and every service call is recorded in the logbook.

RBQ 5645-9605-0115.8 · 15.10 · 16
24 hwritten quote
$5Mliability insurance
$0on-site estimate
5 areasMontréal, Laval, Longueuil, South Shore, North Shore
FAQ · Commercial preventive maintenance

The questions we get before signing a maintenance contract.

14 questions

What is commercial HVAC preventive maintenance?

It’s planned, regular care to keep your heating, ventilation, air conditioning and refrigeration systems at peak performance and prevent breakdowns. Each visit includes routine inspections, cleaning and adjustment of components, performance testing, system optimization and a detailed report.

Do you adapt maintenance to my type of building?

Yes. A retail complex in Montréal, offices in Laval, an industrial warehouse in Longueuil or a boutique hotel on the North Shore or South Shore don’t have the same equipment or the same constraints. We take inventory during the visit and adjust the frequency and tasks to your needs.

How often should a commercial HVAC system be serviced?

Our starting recommendation is two visits a year, in spring and fall, for heat pumps, VRF systems and air exchangers. Rooftop units, air handling units and commercial refrigeration need four visits, one per season, mainly for filters and coils. The final frequency is set during the visit, based on the condition and use of the equipment.

Is preventive maintenance mandatory in Québec?

Partly. The Regulation respecting occupational health and safety (s. 104) requires every mechanical ventilation system in a workplace to be inspected and adjusted at least once a year. The Regulation respecting halocarbons (s. 22) requires a leak test at least once a year, with no more than 15 months between tests, for air conditioning and refrigeration units of 20 kW and over and for chillers.

Is my unit 20 kW or more?

20 kW is about 68,000 BTU/h, or roughly 5.7 tons of capacity. It’s shown on the unit’s nameplate. On the first visit, we record each unit’s capacity in the logbook so you know which ones are subject to the annual test.

Who’s allowed to do the leak test and handle refrigerant?

Only people who hold the environmental qualification certificate provided for in the Regulation respecting halocarbons (ss. 43 and 44). The test is done with an electronic leak detector capable of detecting a leak of at least 5 g per year.

What’s in the logbook and the visit report?

The logbook required by s. 59 records the date and nature of the work, the unit’s location and serial number, the refrigerant type and quantity in kilograms, the leak test results and the technician along with their certificate number. A copy is given to the owner and the logbook is kept for 5 years. Our report adds what we inspected, what we found and what we did.

What should you do if you suspect a refrigerant leak?

Call us. The regulation requires the leak to be sealed without delay and, for a unit of 20 kW and over, the refrigerant in the leaking section to be recovered and the amount released to be assessed within 48 hours. Simply recharging a leaking unit is prohibited. After the repair, a new test is done between the 30th and 60th day after the unit is put back into service.

My system runs on R-22. Do I have to replace it?

Not necessarily. R-22 systems already installed can legally keep running. Importing R-22 as a refrigerant is banned in Canada: servicing is done with recovered and reclaimed R-22 or stock imported before 2020, which makes every recharge harder to get. We help you plan the replacement at the right time rather than in an emergency.

Does maintenance really lower the energy bill?

The U.S. Department of Energy’s O&M guide (FEMP, 2010) estimates that efficiency-focused operations and maintenance programs can save 5 to 20% on the energy bill, with no major investment. The actual result depends on the condition of your equipment to begin with.

Do you service rooftop units with gas heating?

Yes for the unit’s air conditioning, ventilation, refrigerant and electrical, covered by our RBQ licences 15.8, 15.10 and 16. The gas heating section, boilers and burners fall under other licences: that part is handled by a licensed partner.

How much does a commercial preventive maintenance contract cost?

The price depends on the number and type of units, how they’re accessed (roof, mechanical room) and the number of visits. We do the on-site estimate for free and you get a written quote within 24 hours, with a final offer before the work begins.

Where do you offer service?

Throughout Greater Montréal: Montréal, Laval, Longueuil, the South Shore and the North Shore. Our office is in Montréal and our showroom is in Boucherville.

What’s the difference between preventive maintenance and a service call?

A service call repairs a unit that’s already broken down. Preventive maintenance follows a fixed schedule to prevent breakdowns: filters, coils, drains, electrical, refrigerant and legally required tests, with a report after every visit.

Experience superior HVAC maintenance

With AirGreen, you gain a partner committed to keeping your commercial HVAC system efficient, for the long haul.

We serve businesses in Montréal, Laval, Longueuil, the North Shore and the South Shore with complete, professional and reliable preventive maintenance, so your business stays comfortable and efficient all year long. Free on-site estimate, written quote within 24 hours.

All our services in commercial HVAC: air conditioning, heating, ventilation, refrigeration and air quality.

Monday to Thursday 8 a.m. to 6 p.m. · Friday 8 a.m. to 4 p.m. · sales@airgreen.ca

Montréal: 4951 Sainte-Catherine Street East · South Shore showroom: 1370 Joliot-Curie Street, Unit 712, Boucherville

RBQ 5645-9605-01Subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electrical.
Experienced refrigeration techniciansEnvironmental qualification certificate to handle refrigerants.
Transparent pricingA final offer before the work. No surprises at the end.
$5M insuranceCivil liability, from start to finish of the work.
Report after every visitWhat was inspected, what we found, what we did.
Greater MontréalMontréal, Laval, Longueuil, South Shore and North Shore.

Gas heating, boilers and burners: this work falls under other RBQ licences. When your building has them, this part of the maintenance is handed to a licensed partner.

Sources verified on October 14, 2026.

  • Regulation respecting occupational health and safety (CQLR, c. S-2.1, r. 13), ss. 5 and 104 — LégisQuébec.
  • Regulation respecting halocarbons (CQLR, c. Q-2, r. 29), ss. 8, 11, 18, 22, 43, 44, 59 and 60 — LégisQuébec, up to date as of June 1, 2026.
  • HRAI, fact sheet on the Ozone-depleting Substances and Halocarbon Alternatives Regulations (SOR/2016-137), May 2026 — R-22.
  • U.S. Department of Energy, FEMP, O&M Best Practices Guide, Release 3.0, August 2010, section 2.4 — 5 to 20% savings on the energy bill.
  • ANSI/ASHRAE/ACCA 180-2018, Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems — inspiration for the task lists.

Visit frequencies are our starting recommendation; they’re confirmed during the visit based on the condition and use of the units. Energy savings shown are indicative. This page summarizes regulations; it does not replace their official text.