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Tankless Hot Water Heaters, Efficient, Effective, Endless.
Posts tagged tankless
Navien Condensing Tankless 98%
Apr 22nd
Navien Condensing Tankless 98%
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Navian tankless water heaters are rated at up to 98% efficiency; this is achieved through a process called 
condensing. This is the highest rated condensing tankless available on the market today. As a result if the Navian’s high efficiency an average house can expect to save about 40$ additional over a conventional non condensing tankless Water heater. Compare it to a conventional tank type water heater and you could potentially save more than 160$. Efficiency is the key for the future, we need to get more out of what we now have less of. 98% of the energy used in this Navian unit actually works to heat water and is not just blown out the exhaust vent. The chart should help to determine what size of Navien tankless water heater you might need to meet your home/familys domestic hot water needs.
Navian has now moved to dual stainless steel heat exchanges in its tankless water heaters, they claim that this material offers 20 times more corrosion resistance and increased condensation damage. The Navien Tankless water heaters are also employing a new air pressure sensor that senses incoming and oxygen and can compensate for long vent runs to maximize efficiency in the combustion chamber.
Navien has also updated their website so check it out here. Visit Navien’s Website
Get a Free Consultation on a Navien for Your Home – Call Toll Free 1-855-
Solar Water Heater and Tankless Update
Apr 21st
Solar Water Heater and Tankless
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One of our readers is working on installing a domestic solar hot water heater in conjunction with a tankless. They were going to go with a Rheem tankless to offset any additinonal temperature increase that was needed over the solar gains. Unfortunately they found out that the particular unit that they were planning on using senses the incoming water temperature, buy ‘ignores’ water that is within 40F of the target temp (ie. the unit won’t cut on to work). This has caused them some problems because:
1) The max output on any residential line is 120F (49C) (this is canadian law it cant be any hotter than this in a residential home).
2) If the solar heated water comes in at 100F (37C) or warmer, the unit will not kick on. This means the output is 37C, a cold shower to be sure.
3) If you go to the commerical unit, the max temp is 180F. This much too hot for residential use (think of someone turning on the hot water at the sink to do dishes), but it would work from the 40F differential standpoint (ie. if the water is 60C or colder, then the unit will fire, anything warmer than 60C doesn’t matter as it would be warm enough for a shower). Again this is illegal in Canada as the Max allowed Temperature is 120F.
The best solution is to more to a Rinnai Tankless water heater as this unit only requires there to be a 20 degree farenheight differentiation between water to be heated and heated water. Therfor your shower will at the very least be 100 degrees farenheight which is plenty warm enough.
These co-heating water heating systems are quite complicated so its important that you talk to a prefessional regarding any plans that you have for your home or cottage. Feel free to send us an email if you have any questions.
Tankless Installation Time
Apr 8th
Installing a Tankless
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How long is it going to take to install a new tankless water heater?
There really isn’t a simple time frame that can be stated because no two installs are the same. Everyone’s home is unique and this means that install times are different for every home. If you have a tankless system and are replacing it (far and few between) the tankless install will be relatively quick as most of the pipes and the gas line will be the right vicinity.
If you are moving from a conventional hot water tank to a tankless water heater then it will take at least a few hours. These are a few of the required tasks of an install crew
This is a very short rundown of the installation process, it is much more detailed and requires more time than you might expect. All tankless water heaters have very specific details as to where and how they are vented. This does place a bit more work on the installer as they have to ensure that their installation meets all codes.
All and all a new tankless installation will run anywhere from a few hours to an entire day. For the majority of situations it is rare for a tankless to take more than half of a day to install. So I would suggest to budget about 4 hours for the installers to finish their work.
Grant Money Increased By 25%
Apr 1st
25% more for a new Tankless
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Part of the government’s economic action plan is to boost the eco energy retrofit program that is currently running. The government has increased all available grant money for energy efficient retrofits by 25%. Additionally the program has been expanded with a 300 million dollar increase in funding over the next two 
years.
You can download the new PDF here
Initially the program gave home owners 18 months to complete all retrofits, perform the E audit and submit files for rebates. This has now been extended and homeowners that are past their 18 month time frame can still perform retrofits and get access to additionally grant money by performing a F-audit.
This is really significant for The Tankless Hot Water Guide as the additionally grant money will further reduce the cost of tankless water heaters for consumers. A tankless with an efficiency of .82% or better will get you 630$ in rebate money. If you decide to go with a condensing tankless water heater the grant money is even better (.94% efficiency or better) this will net you a 750$ cheque from the government.
You cant find a better time to get go out and get a tankless water heater.
Condensing verses Non-Condensing Tankless
Mar 27th
Condensing verses Non-Condensing
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Tankless water heaters come in two different efficiency styles, condensing and non condensing. A condensing unit will recover more than 85% of the gas that a regular tankless water heater would otherwise vent out. Navien or “Navian” makes a tankless system that is 98% efficient by employing the condensing system. The high efficiency is gained by allowing the relatively warm exhaust gases to transfer otherwise wasted heat to the incoming water preheating it before flowing through the primary heat exchanger. This adds about a 10 to 15 percent efficiency increase to a tankless water heater which in itself is already quite efficient.
Now the grants that are available from the provincial and federal government are 
different for a condensing and non condensing tankless water heater. A condensing unit will receive $600 in total grants or $300 from each government level. The non condensing unit will net you $250 from provincial and federal netting $500 total. The governments trying to reduce energy consumption and pollution emissions would naturally give more grant money to tankless water heaters that are the most efficient.
Get Some Government Grant Money
Mar 25th
Tankless Government Grants
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Currently the Ontario and Canadian government are giving rebates to households in Ontario that upgrade 
their conventional water heaters to either a state or a tankless water heater (I realize that state tanks have not really been explained so I will make a point to do a synopsis on them this week). The provincial (Ontario) will give 250$ for any tankless water heater that is installed, the federal government will match that offer which totals the rebate to 500$. This is a good chunk off the purchase and installation of a tankless water heater. State tanks are eligible for 300$ from the federal government and another 300$ from the Ontario government totaling 600$.
Additionally if you live in the Enbridge territory they are offering 300$ off your gas bill for any new tankless 
water heater installation in your home. Enbridge’s territory consist of most of southern Ontario. Their service territory includes these cities referenced below and a number of others but it would be too long to list:
- Barrie
- Bolton
- Brampton
- Caledon
- Metro Toronto
- Mississauga
- Newmarket
- Richmond Hill
- Whitby
Ontario has a unique market where a significant portion of hot water tanks are rented. As the market for tankless hot water tanks begins to penetrate households there has become a 
strong demand for rental units for these systems as well. If you decide that renting is a better idea than outright purchasing you are still entitled to the rebates that are offered from both the government and from Enbridge.
There is a small catch though; to prove that you have upgraded you water heating system the Ontario government requires that a homeowner get an energy audit. This is a thorough evaluation of your home and its overall efficiency. Once the first audit is completed, you, the homeowner are sent the results of your audit (SAMPLE REPORT). Now that this is completed you have 18 months to make any renovations, or get your tankless hot water tank installed. After the renovations have been completed you need to get a second audit which will validate that all upgrades have been completed and grant cheques will be sent. Looking for an audit? we can put you in touch with a certified eco energy evaluation company. FIND OUT MORE
This is a bit of a complicated process but if you are looking to upgrade even a few things there are rebates from the Ontario government for almost anything that will make your home more energy efficient.
Fill out a quick form to get a price for a tankless water heater for your home FREE QUOTE
The Cold water Sandwich
Mar 23rd
What is the cold water sandwich?
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This sandwich happens when there is warm water for a few minutes then a burst of cold and then rapidly back to warm. This occurs in homes with tankless water heaters as the residual water in the pipes going to a faucet or shower can still be hot. The user in the household will then turn the tap on and feel warm water almost instantly. A tankless water heater takes a few seconds to heat up the heat exchanger and start 
transferring that heat to the water. The result is that a small amount of cold water can make it through the heat exchanger without warming up. When this cold water reaches the end user it may not even be noticed or if the person is in the shower it may be quite evident. After a second or two the heat exchanger is working and hot water is being produced and sent though the hot water pipes bring the desired water temperature again. This does occur more frequently in electric tankless water heaters over gas powered tankless systems. Gas is at full temperature almost immediately where an electric element can take a minute to fully reach its operating temperature.
Now you know what a hot water sandwich is in reference to plumbing and tankless hot water heaters, ask your contractor or installer as there are ways to mitigate this sandwich.
