Ontario Water Hardness Levels

An instant hot or tankless water heater is extremely efficient.  The system relies on its advanced heat exchanger to quickly heat up water.  Scale and Lime tend to build up faster when water is heated, so to combat this problem a tankless is usually installed with flush valves, which allow vinegar to be pushed through the system dissolving the build up and returning the tankless to its original efficiency level.  This build up is exponentially increased as the grains or water hardness increases in communities and towns throughout Ontario.

Hard Water Causes Inefficiency

Below is an extensive list of Ontario cities and the corresponding water hardness that is present in the water supply.  The higher the number of grains the harder your water is, which, in turn produces more scale and deposits in your water heater, on shower heads, around faucets, and so forth.  A conventional water heater will become much less efficient with time in a hard water situation, and it can’t be cleaned. For this reason we recommend a tankless system that can be cleaned with a vinegar solution, restoring efficiency.

Quick Hard Water Exercise:

  1. Lookup your city and see if you have hard water
  2. Think about how old that 40 gallon hot water tank is in your house
  3. Know that in on average at 7.5 grains of hard water a regular tank loses 2% efficiency a year to due scale build up
  4. That 2% doubles to 4% at 15 grains and so on…..
  5. After you do the math a tankless that is able to be cleaned of all scale becomes very economical


City Hardness (grains) Population
Almonte 17.5 2805
Amhurstburg 6.5 6060
Ancaster 19 6718
Arnprior 12.2 8663
Aurora 17 see Newmarket
Azilda 12 1403
Barrie 9.5 41990
Beamsville 15.6 3864
Belleville 6 34391
Bracebridge 2 5304
Brampton 24.2 58571
Brantford 24 42053
Brockville 7.5 11302
Burks Falls 10 1200
Burlington 9 47562
Carleton Place 5.5 4956
Cayuga 120 905
Chatham 13 19874
Cippawa 8.6 N/A
Clifford 15 660
Clinton 13.2 2136
Cobalt 4 461
Cobourg 7.5 7234
Cochrane 18 2474
Collingwood 4.5 9632
Copper Cliff 2 N/A
Cornwall 7 19290
Craigment 4 N/A
Delhi 18 2819
Deseronto 8.4 1314
Dryden 3.5 5900
Dundas 17 10320
Dunnville 21 3830
Elmira 29 390
Essex 33.4 3658
Etobicoke 8 109153
Fonthill 15.6 2495
Fort Williams 1 N/A
Galt 22 930
Gannonoque 7 3759
Goderich 5.5 4808
Grimsby 8 6821
Guelph 22 30652
Hagersville 30 2055
Haileybury 2 1243
Hamilton 7.5 147943
Harrow 49.8 3112
Hanover 13 3915
Hawkesbury 2 5300
Hespeler 26 550
Ingersoll 24.4 4269
Iroquois Falls 4.5 2005
Islington 16.2 20137
Kapuskasing 6 3490
Kemptville 16.4 6130
Kenora 4 9929
Kingston 7.5 37776
Kirkland Lake 3 4712
Kitchener 40 87480
Lansing 21 N/A
Leamington 14 17253
Lindsay 8.5 27220
Listowel 13 9907
London 25 149133
Lucan 13 N/A
Lucknow 16.4 977
Meaford 12 2978
Merritton 8.5 N/A
Midland 8 16268
Mitchell 16.2 1907
Matawa 5
Mount Forest 25 2937
New Liskeard 16 3306
Newmarket 10.5 53915
New Toronto 8 see Toronto
Niagara Falls 8 29250
North Bay 1 24960
North York Twsp. 18 173099
Norwick 14 1220
Oakville 7 34364
Orillia 10 19999
Oshawa 7.5 38796
Ottawa 3 181258
Owen Sound 15 20688
Paisley 19.5 829
Paris 20 2984
Parkhill 14 1145
Parry Sound 4 3020
Pembroke 2 15357
Penetanguishene 7.5 see Midland
Perth 4 5596
Peterborough 5 40913
Picton 7 2265
Port Arthur 6 N/A
Port Colborne 7 6291
Port Dover 13.2 N/A
Port Elgin 38.4 1852
Port Hope 7.5 5553
Prescott 7 3553
Preston 17 620
Renfrew 2.5 12221
Richmond Hill 17.2 72717
St. Catharines 7 40750
St. Mary’s 22.8 1475
St. Thomas 11.5 29300
Sarnia 7 38869
Sault Ste. Marie 3 29847
Scarborough 8.5 155061
Seaforth 17.5 1496
Shelburne 12 N/A
Simcoe 12 16900
Smith Falls 5 6904
Stratford 30 14604
Strathroy 17.5 5543
Sturgeon Falls 2 3134
Sudbury 2.5 53168
Tavistock 30.4 1893
Tecumseh 7.8 5953
Teeswater 32 616
Thorold 8 5848
Tillsonburg 12 8925
Timmins 2 19055
Toronto 7.5 319202
Trenton 14 6120
Twin Province 17.5 N/A
Uxbridge 15.4 3533
Walkerton 8.8 2651
Wallaceburg 6.5 5822
Waterloo 28 see Kitchener
Welland 8 19258
Weston 10 9448
Whitby 7.5 19750
Windsor 6 72436
Woodbridge 16.2 11770
Woodroffe 22.5 N/A
Woodstock 2.5 26041

It’s always a good idea to have your water tested to determine not only water quality but water hardness and this list should be considered just a rough guide.

Tankless Installations

Toronto Tankless Installations

Do you live in Toronto and interested in upgrading from a conventional tank to a new high efficiency tankless water heater?  Go Tankless is a full service tankless maintenance, service, and sales company that specializes in tankless water heaters.  We know them inside and out and always work to ensure you get the best tankless price as well as the best tankless service in Ontario.

We at GoTankless.ca are committed to customer service. Our goal is your complete satisfaction every step of the way. Our commitment starts with a free, no obligation consultation with one of our in-house experts. Together we will work through all of the available options and determine which tankless hot water heating system is right for you. Next, an in-home installation appointment can be arranged at your convenience.  And for those with busy schedules, evening and weekend appointments are always available. A fully licensed team of professionals will install your new tankless system to manufacturer’s specifications ensuring maximum efficiency, performance, and system longevity. While on hand our friendly staff will guide you and your family through the ins and outs of your new tankless system and answer any questions that you might have. Finally, each and every customer can expect a phone call from the owners of GoTankless.ca to convey our personal appreciation for your business and to make sure your experience was a rewarding one.

So give us a call today or fill out our quick contact form.  Its time to start saving on your homes water heating bills.

Tankless Scale and Lime Buildup

That crusty buildup on your faucets, shower heads, and dishwasher is lime scale buildup.  It forms when water passes through your fixtures, and reduces the functionality and efficiency of your household appliances. Conventional water heaters have been known to accumulate as much as 20 lbs of scale buildup over their lifetime. With the application of heat, scale buildup occurs more readily, accelerating the process and causing more problems.  A conventional water heater loses more than 2% efficiency per year because of this buildup, which acts as an insulator preventing proper heat exchange. A tankless water heater is just as susceptible, but a simple built-in system allows the buildup to be removed, returning the water heater to its original efficiency.

We offer tankless cleanings and recommend you have your system flushed once a year to maintain its highest efficiency.  This is a relatively quick process taking about an hour to complete.  In addition to a flush, we inspect the system’s igniter, flame sensor, fan, and venting system to ensure everything is in tip top shape.

Go Tankless services the Greater Toronto Area, including Newmarket, Aurora, Bradford.  If you have any questions about our service area call us and we will discuss your location.

Tankless Service

Your tankless water heater is built to last more than 20 years, ensuring that it runs smoothly and maintains its efficiency requires regular maintenance.  Here are some of the services that should be completed regularly, usually at the same time your tankless is flushed.

  1. Flush the unit
  2. Inspect the fan
  3. Inspect the gas manifold system
  4. Clean the igniter and flame rod(s)
  5. Remove and inspect the servo valves and ensure proper movement
  6. Inspect flow sensor and check for damage
  7. Pull the venting and inspect the exchanger for condensate damage or corrosion

A tankless does have quite a few parts but all can be fixed or replaced with great tankless service.

If you have any tankless error codes or any issues give us a call and we can help trouble shoot your system.  If all else fails we can have a tankless service technician come out and diagnose your system.

Give us a call or fill out the form to the right and we will get back to you as soon as possible.

Tankless Flushing 139$

Flushing your tankless is essential to maintaining its high efficiency rating. A tankless flush will remove all of the scale and lime that has built up on your heat exchanger saving you money and helping the environment. Give us a call today to schedule your next service.

Scale builds up fast inside a tankless as the water hardness of a certain area increases.  Check out this chart of water hardness in cities around Southern Ontario and see how much your water heater is at risk for scale buildup.

Having a clean tankless is the most important factor in keeping your tankless at its highest efficiency level. If you have had a tankless installed already by a reputable company you will have service valves, but if you paid a bargain basement price for your tankless the contractor probably omitted the valves to save money (they can still be added to the system after the fact). These valves isolate the heat exchanger allowing it to be flushed or cleaned of lime scale, calcium, and general buildup which acts as an insulator preventing the water from absorbing heat more readily. A tankless flush with a vinegar solution will dissolve the buildup effectively reviving the factory level of efficiency.

We at Go Tankless only use food grade citric acid or food grade phosphorus acid to flush the inside of your tankless. This is a potable water system and if any contractor says they use a solution of CLR or some other highly acidic poisonous solution do not let them near your house! The last thing you want is to be introducing poisons to your drinking system.

Our tankless flushing service covers most of Southern Ontario, give us a call and we can schedule a flush for your water heater.  A tankless flushing is a quick process and only takes about an hour.

Tankless Cleaning $139

Descaling your tankless is incredibly important.  You purchased a  high efficiency unit for a reason-Keep it that way! Lime scale may reduce your tankless’ efficiency rating by more than 3 percent per year. Have your unit flushed regularly to continue to enjoy your energy savings!

We offer tankless cleaning and flushing for only $139.

A tankless cleaning and descaling only takes around an hour but will bring your system back to its original efficiency.

Give us a call now and we can set up an appointment that’s convenient for you.

Service Locations

  • Barrie
  • Newmarket
  • Aurora
  • Richmond Hill
  • Markham
  • North York
  • Vaughan
  • Bolton
  • Mississauga
  • Etobicoke
  • Toronto
  • Scarborough
  • Burlington
  • Hamilton
  • And The Many Areas In Between