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Everyone knows hot water is dangerous if it’s too hot, but now there is a reason that it’s a bad idea to keep it too cool. For years, plumbing codes required hot water to be maintained at degrees or more, and even hotter to promote sanitation for commercial and sterilization applications. In the s, the presumption that hotter was better lost favor because of the hazards presented by very hot water. Thousands of people were being severely burned every year by exposure to water so hot that it could scald in seconds. For that reason, since the s new water heaters installed in houses have had the hot water temperature set at degrees or less. But many houses still have overly hot tap water, and tragedies still occur. Some homeowners turn up the temperature on newer hot water heaters to extend the hot water supply or to satisfy personal preference. Many older water heaters retain their original settings of degrees or higher. Hotter still, in many cases, is water from “summer-winter hookups” on hot-water boilers, in which domestic hot water for sinks and tubs is produced by the central heating system.

Lack of hot water from my oil burner?

View steveinpa’s Album Yes, The furnace has a separate internal coil used to just to heat the hot water for faucets, etc. I guess my concern is the effect of hot water from the furnace coil used to fill the electric water heater. I’m not sure of the exact temp of the hot water. But, I do know that the hot water coming from the taps is very hot. The gallons per minute of hot water is not up to the new demands on this type of hot water system.

If you need to adjust the thermostat on it, allow half an hour after adjusting it before measuring the temperature again.

Hello, I am brand new here and glad I came across the forum. I am currently in the process of making a big decision and wanted to get as much info as possible. I have been in my house for about 4 years, and it was built in the s. I have oil heat. I have a Wells McClain furnace with a heating coil for hot water. I was told the furnace is 22 years old. Since living here I have always had limited hot water capacity, meaning when I am in shower, all it takes is for the kitchen sink to be open, even on cold, and the shower temp drops instantly.

We have avoided this by being careful, but now the problem is worse. I am have to turn the knob in the shower way up hot before the water gets warm, and while showering, I have to gradually turn up the knob to keep it warm.

Summer winter hookup / indirect water heater / conventional electric hot water heater

I assume that you mean that the temp on the boiler is set to and not the aquastat for the circulator from the boiler coil to the storage tank. My first question has to be, when did you notice that this 12 year old system was not working? Since it is not new I would have to assume that it was not always like this.

I’m in PA if this helps

I have gas heat in my current house now and am not familiar with how anything else works. This spells large oil bills to me, but again I don’t know much about oil heat. I’m in PA if this helps The background on this house is that it was built in It has an addition that put on in As far as I know, the house has had oil heat from day one. However, the oil heat system with summer winter hookup that the house currently has is brand new as of So I’m wondering if a new system will be more energy efficient than what I’m imagining.

The house, BTW, is large. I don’t have square footage info, but it’s got 5 bedrooms, 3 full baths, living room, family room, eat in kitchen, breakfast room, mud room, full basement, attic with pull-down stairs access. I’m trying to figure out if this summer winter hookup thing is something to avoid. As an aside, we drove by the house yesterday, and the roof looks like it might be bad.

Summer/Winter Hot Water Hookup

Shut off the main water valve, which is typically located near the water meter. Drain hot and cold water from house by attaching a hose to sill cock or basement faucet; drain the water into a sump-pump pit or to the outdoors. Open all faucets and flush all toilets in house, starting with top floor and working your way down.

Mid winter is not the time to venture into unfamiliar territory without a good guide.

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summer winter hook-up: hot water problems

During the first winter season, I noticed that the more my geothermal system ran to heat my home So I initially found myself increasing the thermostat temperature on both the upper and lower heating elements in my electric hot water heater to compensate and make the bath water hotter. When Spring arrived and the geothermal system was running much less, I found my hot bath water was scalding hot.

I brought this to the attention of the original installer and he sent out his plumber to investigate We then took a wait-n-see approach until the following winter season when once again I found a noticeable drop in the temperature of the hot bath water exiting the Rheem electric hot water heater the more my geothermal system ran.

The pressure is at 50 and the temp is at degrees.

Don’t waste heating oil Saving money is as easy as flicking a switch. Tipster Susan Gehris shows us her tip for saving money on your oil bill. Next time you’re outside, point your ear toward your home and listen closely. The rumbling you hear might be your boiler firing up, heating water just so that when it starts cooling off, the burner will ignite again and heat the water some more. You know you have this kind of setup if your boiler kicks on in the summer, not to heat the house, but to heat your water.

It’s often called a “summer winter hookup. Many homes already have such a switch at the top of the basement steps. She last filled her oil tank with gallons in April. Before installing the switch, she’d burn through most of that by September just heating water over the summer. But since she started turning the boiler on only on cold days or when she needs hot water, she didn’t have to fill the tank until late December. The mild winter has helped, too. When she doesn’t need heat, she turns the boiler on in the morning so she has hot water while getting ready for work.

If she doesn’t need heat that night, she’ll leave the boiler on for a couple of hours so she has hot water for cooking and cleaning.

Summer winter hookup / indirect water heater / conventional electric hot water heater

I do not see a mixing valve going into the toilet. The cold water line goes from the floor to the toilet, so possible there is a mixing valve below the floor. Before I rip out the floor, is there any other possible cause to the problem? Could it be the mixing valve for the shower?

And retracting the slide the night before you leave can save a lot of grief on a cold winter morning.

Boiler with summer winter hook up not producing hot water! As I know it, our boiler works well. We get heat in the house and all is good. The boiler is 7 years old and is maintained once a year. We don’t have a water heater for domestic use so all of our hot water comes from the boiler. We have hot water heat along the baseboards.

Every morning, it is impossible to get more than 5 minutes of hot water out of the shower. I was told by a plumber friend very experienced that doing an acid wash through the grids? I am working on adding a master bath and will most likely add a hot water heater for domestic use but that is a couple of months away.

Putting a UPS on a Rinnai Water Heater

Normal settings on a hot water heating system is either or I guess what Im asking is what are the best settings for summer, then winter months. They are compatible with most hot water tanks..

And retracting the slide the night before you leave can save a lot of grief on a cold winter morning.

Even if you DIDN’T have the PV, mini-splits would make good short and intermediate term economic sense unless heating oil drops back to a buck-fifty, like it’s going to do any day now It takes a bit of careful thinking about how many ductless heads it takes, and not all houses are ideal, but most houses can manage fine with heads and tons of compressor. WITH PV it’s a no-brainer- get RID of that stinking environmental hazard in the basement and move onto lower carb lower-cost state of the art heat pump technology!

I can point you to a huge amount of online detail on ductless heat pump performance issues and help you figure out sizing issues, if it’s of any interest. But for now lets keep it on your hot water question. Using a hot water heat as pre-heat to the coil means you have to keep the boiler hot all summer or plumb in coil-bypass to keep heat from the hot water stream from just heating up the boiler.

The heat transfer in the tankless coil works both directions, after all. It’s simpler to plumb it to use the boiler as pre-heat to the tank, which won’t really care if it’s taking in 60F summertime water or F wintertime water. If you plumbed it with the coil as pre-heat to the electric tank, you can turn off the boiler for the summer and save huge on standby loss cost and a bit on air conditioning cost.

IIRC when using the boiler’s coil as pre-heat to the electric tank, MA code still prescribes a tempering valve on the output of the coil as scald-protection.


Campgrounds that are open are generally empty, the crisp air is quiet and the landscape is peaceful. Still, the best part: Have a safe and relaxing winter trip with these tips to help you prepare your RV and enjoy an offseason adventure. Prep Your RV for Winter Before heading out, the most important thing to do is make sure your rig will be up to the rigors of winter camping.

I will most likely hire a professional to install the water heater and rezone.

Integrating water heating with a standard hot-air furnace is not possible; if you have a furnace, you have to stick with a stand-alone water heater. A copper-coil heat exchanger extends into the boiler, and water is heated as it flows through this coil. The problem with tankless-coil water heaters is that the boiler has to be hot to produce hot water.

In the winter in a cold climate, the boiler is hot much of the time and may not even need to fire up to supply hot water due to residual heat in the boiler. But during the summer the boiler is less likely to be hot, and the on-off cycling to heat water wastes a lot of energy. This is a separate insulated water tank that is heated using hot water from the gas- or oil-fired boiler. One advantage of this option is that during the warmer months the boiler only has to fire up occasionally to heat water in the indirect tank.

Another plus is that because there is no burner on the storage tank, you can wrap it with extra insulation without having to worry about an air supply or venting as you do with a gas-fired, storage-type water heater. The downside to indirect water heaters is the cost. This is much more expensive than a tankless coil or a conventional gas or electric storage-type water heater.

1.3kw Solar Panels PV to heat water directly, solar pv electric water heater

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