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Building Systems $2,800-$45K

Cooling Tower Service in Toronto, ON | Repair, Rebuild, Water Treatment & Legionella Compliance | Open+Closed Loop

Cooling tower repair, rebuilds, water treatment and legionella programs for open and closed loop towers on Toronto office towers, institutions and industrial plants. We service BAC, Marley SPX, Evapco and Delta, and keep Ontario Reg 611 compliance records per tower.

Tower repair, water treatment and legionella programs for open and closed loop towers.

  • Spring start-up and fall cleanout
  • Fill and drift eliminator replacement
  • Fan and gearbox rebuilds
  • Legionella sampling and records
Call (437) 524-2997 Request Service View pricing
Technicians inspecting a cooling tower fan deck on a downtown Toronto roof

Quick Facts

Pricing
$2,800-$45K
Emergency response
2-4 hours, 24/7
Labour warranty
90 days repair / 2 years install
Program lead
Marco Russo, Chiller Specialist

Commercial Credentials & Verification

TSSA G1 + G2

Licensed Gas Technicians

ESA

Electrical Safety Authority

313A Refrigeration

Licensed Refrigeration Mechanics

$5M CGL + WSIB

Enbridge-Authorized Since 2006

2-4 Hour Emergency Response 90-Day Labour Warranty on Repairs / 2-Year on Installs 5-Star Commercial Satisfaction 20+ Years Commercial-Only

Toronto Commercial HVAC services cooling towers for office towers, hospitals, campuses and industrial plants across Toronto and the GTA. We handle mechanical repair, fill and drift eliminator replacement, fan and gearbox rebuilds, spring start-ups and fall cleanouts, water treatment and legionella sampling for open and closed loop towers from BAC, Marley SPX, Evapco and Delta.

Cooling towers fail on two fronts. Mechanically, fill scales and collapses, drift eliminators break, gearboxes wear and fans go out of balance, so the tower rejects less heat and the chiller burns more energy. On the water side, poor treatment lets scale, corrosion and biological growth build up, including legionella. Ontario expects tower operators to control and document that risk, so records matter as much as the cleaning itself.

Spring and fall cleanouts typically cost $2,800 to $8,500. Fill replacement runs $12,000 to $35,000, and fan and gearbox rebuilds $18,000 to $45,000.

What Does Cooling Tower Service Include?

Start-up and shutdown

Spring start-up and fall cleanout: drain, clean and disinfect the basin and distribution system, inspect fill and drift eliminators, check fan, gearbox and motor, and restart or winterize.

Mechanical repair and rebuild

Gearbox rebuilds, fan and driveshaft replacement, motor work, float valves, nozzles and basin heaters.

Fill and drift eliminators

Removal of scaled or collapsed fill, new fill media and new drift eliminators to restore heat rejection and cut drift.

Water treatment and legionella

Automated chemical and biocide feed, conductivity control, routine sampling and a records binder per tower to support Ontario Reg 611 compliance.

Cooling Tower Cost Guide

WorkTypical range
Spring start-up or fall cleanout$2,800-$8,500
Fill and drift eliminator replacement$12K-$35K
Fan and gearbox rebuild or replacement$18K-$45K
Water treatment programPer tower per season

Signs Your Cooling Tower Needs Attention

  • Condenser water temperature running high on hot afternoons.
  • Visible scale, algae or slime in the basin or on the fill.
  • Gearbox noise, oil leaks or fan vibration.
  • Water loss from drift or overflow.
  • Gaps in sampling or treatment records.

Towers, Chillers and Controls Together

A tower that cannot reject heat makes the chiller work harder, so we maintain both together under our commercial chiller service programs. Tower fans on VFDs and condenser water reset strategies are handled by our BMS and HVAC controls team.

Cooling Tower Service Across Toronto and the GTA

We service towers on downtown and North York office towers, hospitals and universities, Scarborough and Etobicoke campuses and industrial plants along Hwy 410 in Brampton and Dixie Road in Mississauga. Our Brampton legionella retrofit replaced fill and drift eliminators and added automated biocide feed inside a one-week shutdown.

Transparent Pricing

How Much Does Cooling Tower Service Cost in Toronto?

Most Requested

Spring or Fall Cleanout

$2,800-$8,500

Drain, clean and disinfect basin and distribution, inspect fill and drift eliminators.

  • Disinfection
  • Written inspection report
  • Start-up or winterization
Book This

Fill and Drift Eliminators

$12K-$35K

Remove scaled fill, install new fill media and drift eliminators.

  • Disposal included
  • Improved heat rejection
  • Lower drift
Book This

Fan and Gearbox

$18K-$45K

Gearbox rebuild or replacement, fan, driveshaft and motor work.

  • Vibration check
  • Crane where needed
  • Alignment and balancing
Book This

Pricing depends on tower size and number of cells, access, crane needs and disposal. Water treatment programs are priced per tower per season.

Why Us

Why Choose Toronto Commercial HVAC for Cooling Towers?

Legionella Records Per Tower

Sampling, treatment logs and cleaning records kept per tower to support Ontario Reg 611 compliance.

All Major Tower Brands

BAC, Marley SPX, Evapco and Delta, open and closed circuit.

Mechanical and Water in One

Fan, gearbox and fill repairs plus water treatment from one team, not two contractors pointing at each other.

Shutdown Window Planning

Work sized to fit tight shutdown windows. The Brampton plant retrofit finished inside one week.

Chiller Plant Experience

Towers are maintained alongside the chillers they serve, with 85+ chiller plants on PM.

Clean Restarts

Disinfection and sampling before and after restart so the tower comes back on a clean basis.

Repair or replace? Get the numbers first.

A $185 diagnostic gives you written findings per unit, waived when the approved repair is over $750.

(437) 524-2997 Request Service

Process

How Does Our Cooling Towers Process Work?

  1. 01

    Tower Inspection

    Basin, distribution, fill, drift eliminators, fan, gearbox, motor and water treatment reviewed with photos.

  2. 02

    Risk and Records Review

    Existing sampling, treatment logs and records checked against Ontario Reg 611 compliance needs.

  3. 03

    Plan the Work

    Cleanouts, rebuilds and treatment changes scheduled around chiller load and shutdown windows.

  4. 04

    Execute

    Crews clean, rebuild and install. Marco Russo, Chiller Specialist, owns tower and plant scheduling.

  5. 05

    Sample and Record

    Water samples, treatment readings and a records binder kept per tower, ready for inspection.

Field Photos

Cooling Towers Work on Toronto Commercial Sites

Track Record

Related Commercial Projects

All projects
Downtown Toronto $148,000

Bay Street Office Tower 2x 100-ton Centrifugal Chiller Rebuild

Two centrifugal chillers rebuilt in sequence with full eddy current testing, new bearings and seals, and refrigerant handled under ASHRAE Guideline 3. The tower stayed on its 10-year PM program and logged an 18% plant energy reduction after the 2024 compressor rebuild.

Building Systems Case study

Client Feedback

What Clients Say About Our Cooling Towers

5-Star Commercial Satisfaction

"The new fill dropped our condenser water temperature by several degrees on hot days, and the chillers stopped struggling in the afternoons."

Craig Halvorsen

Chief Building Engineer, 25-storey office tower

North York

Two-cell fill and drift eliminator replacement$31,500

"We needed defensible records for our auditors. Their sampling schedule and records binder covered everything they asked for."

Lina Saleh

Environmental Health and Safety Manager, Pharmaceutical packaging plant

Mississauga

Legionella sampling program and automated biocide feed$14,200

"The gearbox was vibrating badly. They lifted it out, rebuilt it and had the tower back before the first warm week."

Ross McKenzie

Facilities Supervisor, College campus central plant

Scarborough

Gearbox rebuild and fan rebalance on a crossflow tower$22,800

Straight Answers

Cooling Towers FAQs

How much does cooling tower service cost in Toronto?

Cooling tower service in Toronto typically runs $2,800 to $8,500 for a spring start-up or fall cleanout, which covers draining, cleaning and disinfecting the basin and distribution system and inspecting fill, drift eliminators and mechanical parts. Fill and drift eliminator replacement runs $12,000 to $35,000 depending on tower size and number of cells. Fan and gearbox rebuilds or replacements run $18,000 to $45,000, especially when a crane is needed. Water treatment programs are priced per tower per season. Larger multi-cell towers, tight rooftop access and disposal of scaled fill push costs toward the high end.

What are the legionella rules for cooling towers in Ontario?

Ontario has specific requirements for cooling tower operators covering registration, water treatment, regular sampling for legionella and record keeping. Building owners should confirm current obligations with the province. We run sampling, treatment and cleaning programs and keep the records per tower so you can show compliance when asked.

How often should a cooling tower be cleaned?

At minimum, a spring start-up cleanout and a fall shutdown cleanout. Towers with heavy debris, scale or biological growth may need more frequent cleaning, and any positive legionella result triggers a disinfection and clean.

What does fill media do and when does it need replacing?

Fill spreads water into thin films so heat can leave the water efficiently. Scaled, collapsed or fouled fill cuts tower capacity and raises chiller energy use. Replacement usually comes every 10 to 20 years depending on water quality.

What are drift eliminators?

Panels that catch water droplets before they leave the tower with the exhaust air. Damaged drift eliminators increase water loss and the spread of droplets, which matters for legionella control.

Do you service closed circuit towers?

Yes. Closed circuit fluid coolers have coils instead of direct-contact fill, and still need spray water treatment, coil cleaning and mechanical maintenance.

Can you rebuild a cooling tower gearbox?

Yes. We remove, rebuild or replace gearboxes, driveshafts, couplings and fan assemblies, with alignment and vibration checks at restart.

Do you provide water treatment?

Yes. Chemical and biocide programs with automated feed, conductivity control and regular testing, with records kept per tower.

Can you work within a short plant shutdown?

Yes. We plan scope, parts and crews before the shutdown starts. Our Brampton plant retrofit was finished inside a one-week window.

Do you winterize cooling towers?

Yes. Fall shutdowns include draining, cleaning, freeze protection and an inspection report so spring start-up has no surprises.

Keep Exploring

24-Hour Commercial Emergency Dispatch

Ready to Book Cooling Towers?

Cooling Tower Service across Toronto and the GTA: $2,800-$45K, written findings before any work, and a 2-4 hour emergency response.

Call (437) 524-2997 Request Service
  • TSSA G1+G2, ESA, 313A
  • Written findings every visit
  • 90-day / 2-year labour warranty
Call (437) 524-2997Request Dispatch