Ontario Hard Water Chart

    A tankless system is extremely efficient and relies on its advanced heat exchangers to heat up water nearly instantly.

     

    The buildup of scale is increased with heat and thus the inside of a tankless heat exchanger will accumulate an efficiency reducing “blanket” over time. To combat this problem a tankless is usually (always by a reputable company) installed with flush valves, which isolates your homes water pipes yet allows vinegar to be pushed through the system in turn dissolving the build up and returning the tankless to its original efficiency. This process takes roughly an hour. If you live in Ontario we offer a tankless flushing service.
     

    There is really no way to descale a conventional storage type tank water heater, those systems simple become increasingly less efficient over time.

    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, this in turn produces more scale and deposits in your water heater, on shower heads, around faucets etc. A conventional water heater will become much less efficient with time in a hard water situation; in which case I would recommend a tankless 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 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
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      CityHardness (grains)Population
      Almonte17.52805
      Amhurstburg6.56060
      Ancaster196718
      Arnprior12.28663
      Aurora17see Newmarket
      Azilda121403
      Barrie9.541990
      Beamsville15.63864
      Belleville634391
      Bracebridge25304
      Brampton24.258571
      Brantford2442053
      Brockville7.511302
      Burks Falls101200
      Burlington947562
      Carleton Place5.54956
      Cayuga120905
      Chatham1319874
      Cippawa8.6N/A
      Clifford15660
      Clinton13.22136
      Cobalt4461
      Cobourg7.57234
      Cochrane182474
      Collingwood4.59632
      Copper Cliff2N/A
      Cornwall719290
      Craigment4N/A
      Delhi182819
      Deseronto8.41314
      Dryden3.55900
      Dundas1710320
      Dunnville213830
      Elmira29390
      Essex33.43658
      Etobicoke8109153
      Fonthill15.62495
      Fort Williams1N/A
      Galt22930
      Gannonoque73759
      Goderich5.54808
      Grimsby86821
      Guelph2230652
      Hagersville302055
      Haileybury21243
      Hamilton7.5147943
      Harrow49.83112
      Hanover133915
      Hawkesbury25300
      Hespeler26550
      Ingersoll24.44269
      Iroquois Falls4.52005
      Islington16.220137
      Kapuskasing63490
      Kemptville16.46130
      Kenora49929
      Kingston7.537776
      Kirkland Lake34712
      Kitchener4087480
      Lansing21N/A
      Leamington1417253
      Lindsay8.527220
      Listowel139907
      London25149133
      Lucan13N/A
      Lucknow16.4977
      Meaford122978
      Merritton8.5N/A
      Midland816268
      Mitchell16.21907
      Matawa5 
      Mount Forest252937
      New Liskeard163306
      Newmarket10.553915
      New Toronto8see Toronto
      Niagara Falls829250
      North Bay124960
      North York Twsp.18173099
      Norwick141220
      Oakville734364
      Orillia1019999
      Oshawa7.538796
      Ottawa3181258
      Owen Sound1520688
      Paisley19.5829
      Paris202984
      Parkhill141145
      Parry Sound43020
      Pembroke215357
      Penetanguishene7.5see Midland
      Perth45596
      Peterborough540913
      Picton72265
      Port Arthur6N/A
      Port Colborne76291
      Port Dover13.2N/A
      Port Elgin38.41852
      Port Hope7.55553
      Prescott73553
      Preston17620
      Renfrew2.512221
      Richmond Hill17.272717
      St. Catharines740750
      St. Mary’s22.81475
      St. Thomas11.529300
      Sarnia738869
      Sault Ste. Marie329847
      Scarborough8.5155061
      Seaforth17.51496
      Shelburne12N/A
      Simcoe1216900
      Smith Falls56904
      Stratford3014604
      Strathroy17.55543
      Sturgeon Falls23134
      Sudbury2.553168
      Tavistock30.41893
      Tecumseh7.85953
      Teeswater32616
      Thorold85848
      Tillsonburg128925
      Timmins219055
      Toronto7.5319202
      Trenton146120
      Twin Province17.5N/A
      Uxbridge15.43533
      Walkerton8.82651
      Wallaceburg6.55822
      Waterloo28see Kitchener
      Welland819258
      Weston109448
      Whitby7.519750
      Windsor672436
      Woodbridge16.211770
      Woodroffe22.5N/A
      Woodstock2.526041

      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.