Serving the GTA and nearby Ontario info@kelvinmechanical.ca +1 905-407-7353

Commercial maintenance

Planned Commercial HVAC Maintenance Visits and Written Service Notes

Scheduled checks of filters, belts, coils, drain pans, burners and controls, followed by a written note so owners and property managers can plan ahead.

  • ScopeScheduled visits and repairs
  • CadenceSeasonal or quarterly by equipment
  • RecordsWritten note after each visit
Open control panel of a gas-fired unit showing wiring, gas valve, pressure gauges and controlsServing the GTA and nearby Ontario

Scope

Items on a planned maintenance checklist

  • Filter changes with sizes recorded so staff and the next visit can match them
  • Belt tension, sheave wear, bearing and motor amp draw checks on belt-drive units
  • Condenser and evaporator coil inspection and cleaning
  • Condensate drain pan, trap and line clearing, with overflow switch checks
  • Gas heat section checks: ignition, flame, heat exchanger condition and venting
  • Economizer, damper, thermostat and schedule review
  • Electrical checks: contactors, capacitors, wiring, disconnects, voltage and phase
  • Written service note with readings, photos and recommended follow-up

Process

How a maintenance agreement is built

Every job starts with a conversation and a look at the equipment. You see the options in plain language before anything is booked.

Request a maintenance quote

  1. 1

    Inventory the equipment

    We list every unit with its location, nameplate details, age and condition. The list is the base for visit frequency and checklists.

  2. 2

    Set visit frequency by equipment type

    Rooftop and packaged units often get seasonal visits, while kitchen exhaust, shop heaters and dusty environments may need more. The schedule follows the equipment and the building, not a template.

  3. 3

    Write a checklist for each unit

    Each unit gets a checklist that matches its parts: belts, burners, coils, drains, dampers and controls. Readings are recorded so changes show up over time.

  4. 4

    Carry out visits and leave a note

    Visits are coordinated with the building contact. Each ends with a written note listing what was checked, readings, parts replaced and recommendations.

  5. 5

    Review once a year

    We go through the notes with you and flag aging equipment, repeat faults and replacement planning. Adjustments to frequency or scope are made in writing.

In pictures

What this work looks like

Rooftop unit serviceKelvin job photo
Rooftop unit servicePanels open for a planned visit
Drive for a make-up air unitKelvin job photo
Drive for a make-up air unitSpeed control for the fresh-air fan
Make-up air drive panelsKelvin job photo
Make-up air drive panelsVariable-speed drives for fresh-air fans

Photos from Kelvin Mechanical jobs in the GTA and nearby Ontario.

Good to know

Checklist groups by season and equipment

Cooling season checklist

Coils, condensate drains, contactors, capacitors, refrigerant circuit readings and airflow are checked before hot weather. A clogged drain pan or dirty coil is easier to fix in spring than during a heat wave.

Heating season checklist

Burners, flame sensors, heat exchangers, venting, gas pressure and safety controls are checked before the cold. Unit heaters and gas-fired rooftop sections are included.

Ventilation and exhaust checklist

Exhaust fan belts, bearings and amp draw, make-up air filters and interlocks, and ERV/HRV cores are checked at an agreed rhythm. Weatherhoods and screens are cleared at the same visit.

Controls and records

Schedules, setpoints and setbacks are reviewed so equipment runs when the building is occupied. Notes are stored per site for owners and managers.

Install, repair, maintain

01

Installation: maintenance-ready from day one

New equipment is installed with filter sizes, access and readings recorded for later visits. The start-up record becomes the baseline.

02

Repair: found early, quoted in writing

Problems found during a visit are explained and quoted in writing before parts are ordered. Follow-up visits are booked at a time that suits the building.

03

Maintenance: the core of this service

Visits are planned by equipment and season, and every visit ends with a written note. Agreement terms are confirmed in writing.

What an agreement covers

Agreements are written per site. Repairs, parts and emergency calls are handled as stated in the agreement. Pricing varies with the number and type of units, visit frequency and access conditions; a quote follows a site review.

Help centre

Questions about Commercial Maintenance

What is the difference between a maintenance visit and a repair?

A maintenance visit follows a checklist to keep equipment running and spot early problems. A repair fixes a fault. Findings from a visit may lead to a repair, which is quoted separately in writing.

How often should rooftop units be serviced?

Commonly before the cooling and heating seasons, but it depends on equipment type, operating hours and environment. Kitchens and dusty spaces often need more frequent visits. See rooftop unit service for the equipment-specific list.

Will you service equipment you did not install?

In most cases, yes. The first visit starts with an equipment inventory, nameplate photos and a baseline set of readings.

Do maintenance customers get priority emergency service?

Any priority terms are written into the agreement, so nothing is assumed. Emergency service remains subject to availability. The commercial emergency pathway explains what to have ready.

Can I set up maintenance for one building only?

Yes. A single building or a single unit can be scheduled. For larger portfolios, see property management HVAC for how multi-building arrangements work.

What should a commercial HVAC maintenance agreement include?

A good agreement lists the equipment, the visit frequency, the checklist for each unit, what is reported after each visit, how repairs and parts are handled and how emergency calls work. It also names the building contact and the access arrangements. Terms are confirmed in writing, and pricing follows a site review.

Does skipping maintenance affect my equipment warranty?

It can. Many manufacturer warranties expect regular maintenance and may ask for records. Read your warranty terms, and keep service notes with dates, readings and filter sizes. We record these at each visit so the history is there if a question comes up. Terms vary by manufacturer and by equipment.

When should I schedule HVAC maintenance in Ontario?

Spring, before the cooling season, and fall, before the heating season, are the usual times. Kitchens, shops and dusty spaces may need more. Booking ahead leaves time to order parts if something is found. Availability depends on the season and the schedule.

What happens during a spring cooling check on commercial AC?

The visit covers coils, condensate drains, contactors, capacitors, refrigerant circuit readings and airflow. Filters are changed and sizes recorded. Findings go into a written note. Doing this in spring leaves time to order parts before the first hot week. See rooftop unit service for the equipment list.

How often should commercial HVAC filters be changed?

It depends on the space. Offices may need a change every few months, while kitchens, shops and busy retail may need them more often. Check filters monthly at first and change them when they load. Record the size so staff can reorder, and note the date in the visit log.

Which maintenance tasks can my own staff do?

Staff can usually check and change filters, keep the area around equipment clear, clear snow from ground-level pads where it is safe and note unusual noises or display codes. Gas, electrical and refrigerant work belongs to qualified professionals. Nobody should go onto a roof without proper access and fall protection.

What records should I keep from HVAC service visits?

Keep the service note, readings, photos of nameplates, filter and belt sizes, parts replaced and any recommendations, filed by building and unit. These make warranty questions, repair decisions and replacement planning easier. We provide a written note after each visit, and you can keep them in one folder.

Is maintenance still worthwhile on an older rooftop unit?

It can be, because visits show whether the unit is still sound or nearing the end of its life. Readings and notes make replacement planning easier. Maintenance does not promise a set lifespan, but it can reduce surprise failures. We tell you plainly if a unit looks like a poor candidate for more repairs.

Where we do this work

Commercial Maintenance in Toronto, the GTA and Hamilton

Toronto Mississauga Brampton Vaughan Markham Oakville Burlington Hamilton All service areas

Quote and booking

Request: Commercial Maintenance

Share a few details and we will follow up. A written quote comes after a site review. There is no online checkout.

  • City and service type help us route your request
  • Urgency and property details let us prepare properly
  • Optional equipment photos speed up repairs and replacements

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