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A brief introduction to hybrid heat pumps<\/h3>\n
In the last few decades heat pump water heaters (HPWHs) have become increasingly popular in America. And for good reason too.<\/p>\n
Heat pump hot water heaters \u2014 also referred to as hybrid hot water heaters<\/strong> \u2014 are the second most energy efficient and environmentally-friendly option (after solar).<\/p>\n As a result they are cheap to operate and result in a much lower carbon footprint. Many homeowners can save $200 to $600 per year<\/strong> by switching to a heat pump.<\/p>\n They are more expensive to install than conventional water heaters. But because the savings are so high these systems often pay themselves back quickly.<\/p>\n Heat pump water heaters pull heat from the surrounding air to heat the water, rather than relying on electricity or gas. In other words they move energy instead of generating it.<\/p>\n As researchers at the Department of Energy put it, \u201cHeat pumps work like a refrigerator in reverse. While a refrigerator pulls heat from inside a box and dumps it into the surrounding room, a stand-alone air-source heat pump water heater pulls heat from the surrounding air and dumps it — at a higher temperature — into a tank to heat water.\u201d<\/p>\n Today most heat pump water heaters also include a backup electric resistance heater in case the surrounding air temperature isn\u2019t warm enough to use. That\u2019s why they call them hybrid heat pumps.<\/p>\n Because they use surrounding air, heat pumps need to be placed in an area of your home that remains 40\u00ba\u201390\u00baF (4.4\u00ba\u201332.2\u00baC) range year-round. They also need at least 1,000 cubic feet (28.3 cubic meters) of air space around the water heater in order to work.<\/p>\n <\/p>\n <\/center><\/p>\n The upfront cost of a heat pump depends on a number of factors including which unit you buy, how long it takes to install, and how many incentives you qualify for.<\/p>\n Annual operating cost of heat pump water heater<\/p>\n The operating cost, or the expected annual cost to run your heat pump hot water heater, will depend on your heaters efficiency rating, energy costs where you live, and how much hot water you use.<\/p>\n Here’s what impacts the operating cost most:<\/p>\n The average hot water heater costs about $225 per year to operate compared to $400-800 for many conventional tank hot water heaters<\/strong> according to the DoE. For a family of four the average cost to run a HPWH is $300 per year compared to $600 for electric storage water heaters according to Energy Star.<\/p>\n In order to figure out what size hybrid hot water heater you\u2019ll need, you should look at the \u201cfirst hour rating\u201d of each model you evaluate. The first hour rating tells you how much hot water you\u2019ll be able to use in any given hour before the tank must refill and reheat more incoming water.<\/p>\n Then you\u2019ll want to estimate the maximum hot water that you and your family will use in any given hour. The way to do this is to look at the flow rate of all your end uses (showers, faucets, dishwashers, etc) and then add up the ones that you\u2019ll use within the same hour.<\/p>\n The average shower uses 2 gallons per minute (with low-flow shower heads using less). If two people live in your home and take 10 minute showers back to back, then that\u2019ll require 40 gallons of hot water.<\/p>\n But let\u2019s say one of you needs to shave after your shower. The average flow rate of a sink is 0.5 gallons per minute. If it takes 2 minutes that\u2019s another 1 gallon of capacity you\u2019ll need.<\/p>\n Now let\u2019s say you want to run the dishwasher after your shower. The average dishwasher uses 6 gallons (with energy efficient models using 4 gallons).<\/p>\n If you add all those up you get 40 + 1 + 6 which is 46 gallons. That means you\u2019d probably want to get a 50 gallon tank.<\/p>\n But remember the bigger the tank, the more it costs. So if you wanted to save money you could elect to run the dishwasher at night and shower in the morning. Or you and your partner could take 3 minute shorter showers and only need a 40 gallon tank.<\/p>\n Heat pump water heaters are about $800 more expensive than their cheapest standard gas and electric models. That begs the question: is it worth the extra money?<\/p>\n Much cheaper operating costs That’s because water heaters generally use about 20% of your home’s total energy. Considering the typical homeowner spends between $1,500 and $2,500 per year on energy that adds up.<\/p>\n Heat pump water heaters are generally 4x more efficient than standard gas and electric models. That means the average household will save about $300-400 per year.<\/p>\n In other words a hybrid heat pump will pay itself off in 2 or 3 years. Over 10 years it’ll save you between $3,000 and $4,000. Not bad. Longer warranty For example the base Rheem gas and electric water heaters come with a 6 year warranty. To get a 9 year warranty costs about another $100. Better rebates and incentives As of writing the federal government will give you a $300 tax credit if you buy a hybrid water heater. States like Maine will send you $750 check in the mail if you buy one. And many of the biggest utilities in the country like Xcel offer $500 rebates.<\/p>\n If you want to see if your city, state or utility offers incentives, visit the Database of State Incentives for Renewables & Efficiency<\/a>.<\/p>\n Lower carbon footprint Thanks to their high energy efficiency, the average heat pump water heater emits 4x less emissions than traditional gas and electric models.<\/p>\n Many people that consider heat pump water heaters also look at tankless water heaters. That’s because both are more energy efficient than conventional gas and electric tanks. Therefore both lead to savings over the long run.<\/p>\n So how do heat pump hybrid water heaters compare to tankless water heaters?<\/p>\n More immediate capacity<\/b> Let’s say you and your family get home from a camping trip or a soccer game and everyone wants to shower at once.<\/p>\n If you have a heat pump water heater, no problem. The Rheem 50 gallon tank for example can give you 4 back to back showers.<\/p>\n But if you bought a low GPM tankless water heater your family will likely run into problems when three of you go to shower at once.<\/p>\n There are tankless water heaters that offer as much as 10 GPMs, but they start to get pricey. So if you need a lot of hot water at once, the heat pump is the way to go.<\/p>\n Lower carbon footprint The average heat pump water heater emits about half as much CO2 (200 kg per year) compared to tankless models (400 kg per year). Why? Heat pumps move heat whereas tankless water heaters generate heat.<\/p>\n We spent hundreds of hours researching and reviewing the best water heaters in every category. Click one of the links below to check them out.<\/p>\n Conventional water heaters<\/b><\/p>\n Heat pump water heaters<\/strong><\/p>\n Tankless water heaters<\/strong><\/p>\n Hybrid Heat Pump Water Heater Buyer’s Guide Switching to a hybrid water heater can save you as much as $4,800 over the next 10 years. In this guide we’ll cover everything you need to know about them. Looking for the best model to buy? Check out our heat pump water heater reviews. A brief introduction […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-414","page","type-page","status-publish","hentry"],"yoast_head":"\nHow do heat pump water heaters work?<\/h3>\n
What are the pros and cons of hybrid water heaters? <\/h3>\n
Pros<\/h3>\n
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Cons<\/h3>\n
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Upfront cost of heat pump water heaters<\/h3>\n
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\nCost of energy<\/strong> \u2014 This is how much electricity costs where you live. Electricity costs are measured in cents per kilowatt hour ($\/kWh). If you live in the South where electricity is cheap you\u2019ll pay much less than if you live in California or Hawaii where electricity is more expensive. This data<\/a> by the EIA shows the average price of electricity in each state. But to get an exact number you\u2019ll need to look at your utility bill.<\/li>\n<\/ul>\nHow to find the right size hot water heater<\/h3>\n
Heat pump vs. conventional gas and electric water heaters<\/h3>\n
\n<\/strong>In addition to looking at the upfront cost of a water heater, it’s important to look at the annual operating cost.<\/p>\n
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\n<\/strong>In addition to the annual savings, you’ll also generally get a longer warranty when you buy a heat pump water heater.<\/p>\n
\nThe heat pump on the other hand comes with a 10 year warranty.
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\n<\/strong>As we mentioned above, there are also a lot of rebate opportunities when you buy a hybrid water heater.<\/p>\n
\n<\/strong>By far the best feature of heat pumps is their low carbon footprint. Other than solar water heaters \u2014 which are still prohibitively expensive in most of the United States \u2014 heat pumps are the most environmentally-friendly water heater available.<\/p>\nHeat pump vs. tankless water heaters<\/h3>\n
\n<\/strong>The best heat pump water heaters on the market offer much more immediately hot water capacity than tankless water heaters.<\/p>\n
\n<\/strong>While tankless water heaters are more eco-friendly than conventional gas and electric water heaters, they still can’t beat heat pumps.<\/p>\nKeep reading<\/h3>\n
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