Lay Z Spa Hot Tub LPG gas heater WiFi controlled.

Set up my lay z spa to be heated with a tankless LPG heater from eBay using a central heating pump and 3 port valve.

[@ericmoe8798]

Thank you from California. Getting ready to help someone do this in Denmark.

[@petewright2283]

Cracking job. Just been reading all the comments and got a few questions. What is the hosepipe you used? Do you find the flow enough on the pump? I like the additional of the check valve. The TH16 is controlling the 3 way valve? Pump is running all the time?

[@markmcdermott9690]

Hi Paul, What is that red hose you are using? how quickly did the pump show signs of rusting Thanks

[@rsj7458]

Did this with the egg in place and use a water butt pump to recirculate the water. That way I still have full functionality from the egg.

[@ScottTesta]

Awesome setup tried with standard home tankless water heater and went through 3 heaters in less then a year with leaks I am assuming because of chemicals . .

[@merlin146]

Nice setup, 6 months on and what's the cost saving verdict?

[@guinnessdublin4669]

Great set up & can see how you have wired in sonoff Wi-fi switch but can you tell me when 3-port is in H/W open position & take it just circulating just through hot tub how have you wired in C/H pump to come on please?

[@vaysu6670]

Nice set up. What wifi plug and app are you using? Also what connectors and pipe type are you using to the Spa? I think I'm heading to the direction of your set up. Thanks

[@darrengough2770]

Hi, can you advise on the fittings you used to connect to the hot tub please. Great set up buddy 👍🏻

[@baldrickscunningplan6154]

They are standard 3/4" hose pipe connectors.

[@mazadult]

@@baldrickscunningplan6154 garden hose or NPT 3/4?

[@baldrickscunningplan6154]

@@mazadult 3/4" BSP

[@mattrace52]

I’ve just bought some hep2o 3/4 female push fit fand they will not thread on at all !!! Head scratch time

[@baldrickscunningplan6154]

@@mattrace52 They are 3/4 fittings but only have a 1/2" thread. What you need are standard hosepipe hoselock connectors. I've tried to put a link but youtube deletes the link.

[@jobbejsk]

This is pretty good. Nice job... How is the copper piping holding up to the chlorine in the water? Chlorine is usually corrosive to copper, I'm told.

[@fruitysupra1]

I love this idea. I live in a little crooked cottage so mains down to the garden would be a nightmare and I’d expect overload the system with how much juice a lazy spa uses. Have you found the lpg to be a cost effective solution?

[@baldrickscunningplan6154]

It is cheaper than electric. Simply because it only takes 50 mins to heat up the tub. Electric took all day and night.

[@ReinierHut]

Hi Paul, great setup, im going to copy this. But one question. Your Gas heater/geiser is doing 8L a minute on max i think. It's turned down to minimum so dunno how much it will do then. How much liter per minute is the pump doing? Im wondering about this because, if your in the pool, you dont want 60c water on your back. It will harm people. Any idea how warm the water gets out of the hose? And how fast do you get to temperature with this setup? 2 hours rougly i think? Have you tried turning the gas higher or does it get too hot then? I can imagine the pump is the limiting factor here? Or is it the waterflow / valve of the heater? Doenst the pump overpressure the heater? Im thinking of a intex sand filterpump in combination with a salt system to use for chlorine. The mini version of intex does 2m3 of water per hour. Thats around 33.33 liter a minute, thats a lot more then the gas heater. You think it will work with this Intex pump? ANother problem is, if you turn it off its off, you cant use the smart switch with this pumpfilter. So im thinking about a "stupid" on/off sandfilterpump. Thx in advance for the answers.

[@truultimatespideyfan]

Looking at doing something similar to this but using a heat exchanger connected to my central heating. How did you connect the air blower back up to the egg with the water hoses in the way?

[@markthornton6012]

the problem isn't the water temp, its when you add cold air to the tub which immediately starts cooling it, warm the air up?

[@rsj7458]

Ps a inline filter to the heater is a must.

[@serenityfarmsprepping2267]

Watched twice just to hear the accent!!! Great video though and doing a similar "American" set up:)

[@rickim102]

What parts did you use in America? I'm only finding UK videos somehow lol.

[@serenityfarmsprepping2267]

@@rickim102 I used a Marey 5L propane hot water heater, (which is almost identical to the one used in video) and powered by a D battery and propane tank. I did not use a thermometer to heat water. I had a 300 gal stock tank with think insulation foam board lid. My propane heated water in 2-3 hours and lid kept it warm all day

[@batusaiprbatusaipr7664]

What did you use?

[@serenityfarmsprepping2267]

@@batusaiprbatusaipr7664 I made the tub out of a Tractor Supply, 300 gallon tank and used a 5L "On demand hot water heater: (Marey), and a Surflo 12volt pump. I did not want to cut holes in tank so I just put the intake line in the tank and the water is sucked up by the pump (powered by a 100 watt solar panel and 35 amph battery). I took the shower head off attachment that comes with the water heater so water just flows back into tank. I have 3-viedos at serentiy farms prepping on "redneck hot tub". Little more work to do this Spring but keeps water a decent temp

[@stephenburke153]

How much was the total set up, looks great 👍

[@WestysGate]

Love this way of doing it mate This is pretty much my concept but ideally want to stop using the egg altogether in the end. Was just wondering why you went with a 8l boiler instead of 18l and how long does that take to heat up the hottub from cold say 10 degrees.

[@richp516]

I have been looking at an alternative heating system and this looks like it, what sort of cost am i looking at. I have looked at my egg and put 2 holes in to go straight through bypassing pump and heater that way i can keep it the blower connected any thoughts ??

[@guinnessdublin4669]

This is a genius ideal & have brought all the parts now but one thing I have purchased a lpg water heater & even though seller confirmed water heater has not got 20 mins timer built in reading instructions states it has. So can you tell me within Sonoff app have you just set it to Auto function with min & max temp range as you can only set eight separate timers, then even though water is still being pumped through water heater will it just come on/off automatically? Please advise further!

[@garycunningham108]

Have you got a parts list for this please and is pump just a normal central heating circulation pump and is it better this way or through the egg

[@matastra]

what are the white adapters called both the same from under heater to red pip and from 22mm to red pipe?

[@stuintheshed1226]

could you do a parts list for this please, trying to work out how to get the hose to the pump connection

[@garycunningham108]

Hi did you ever get a parts list

[@paulball1767]

Did you get a parts list please.

[@garycunningham108]

@@paulball1767 no I never got a parts list . Do you have one?

[@paulball1767]

@@garycunningham108 no i havnt even had a reply. Got my plumber coming nxt week to do mine once its done i will send what he did.👍

[@garycunningham108]

@@paulball1767 thanks

[@supermario1982171]

What a setup 👏👏 are these waterproof

[@peterdavies2922]

Great idea - seen a few videos and like the 3 port valve, Can you advise where you got the wifi switch temp sensor from - any links would be appreciated

[@chrisghz]

It's a Sonoff TH model! I heat my lazy spa in exactly the same way. These gas boilers will heat the whole thing from stone cold in 2 hours. We have a 47kg tank of gas behind our shed and it lasts 3-4 months in the summer keeping the water at 40 constantly. Saves me a fortune!!!

[@stagman1983]

@@chrisghz Hi Chris. How is you installation holding up. With the crazy energy prices I'm looking to use LPG. Just wondering what KW heater did you use and how did you protect it from the elements. And what pump did you use. Thank you in advance

[@tristantalbot4408]

Hi do you think there is a way to put a quick connect hose adapter on both sides of the central heating pump

[@stevenhoade3352]

Hi look good. is there any videos on how to wire this system or any info/wiring diagrams ???

[@dannyarcher]

I’m just curious but if you’ve bought an lpg heater, pipe work, external bronze pumps (£200), three port valves and fittings….. would it not have just been easier to by an all in one intex pump heater?

[@paulagnew7323]

That runs on electricity? The hot tub already has an electric heater, the whole point of fitting an lpg heater is that it’s massively cheaper to run than the electric one.

[@brandonmeade8999]

Hi mate I'm looking at doing this I noticed yours is 8L . Did you find this was enough .I was informed 18 L was needed . Can you advise please .

[@timdoherty8152]

What kind of cost savings are there using propane as opposed to electricity?

[@FrequencyOfThought]

It's only a few cents with liquid natural gas or propane coming in only at about a dollar per 35 dollars spent to heat per unit / every 35 dollars spent in heat energy turns out gas is only a buck or so cheaper in most areas depending where you live.. That's not what it's really about it's that the unit can command hot water and raise the temperature of the pool to usable temperature in 20-30 minutes versus half a day for the weak little "warmer" that comes with it... Plus when you pull the cover off that little heater you lose heat in about 30-45 minutes. So if you wanted to spend a couple hours sitting in your hot tub that wouldn't work. Plus you add the "air bubbles" from these kinds of pumps/heater combo units and it cools the water down to warm bath water levels in minutes... Real fun! I like piping hot water for long as I can stand it.. That's why you do this. It makes your hot tub 110% better.... It's the cheapest way to have the convenience of a super hot hot tub without having a really expensive one or having to keep it hot all the time etc. Most people just keep the other unit plugged in to filter , warm the pool and make bubbles with the glorified leaf blower that's in it , a normal hot tub uses "jets" and high hp pumps the jet the water.. This is a fake poor mans hot tub.. Honestly I think a custom built unit with propane heaters is totally worth it even tho it's all kind of tacky and a lot to put up with.

[@Nothin483]

Can I ask what connectors I would need for the tub to pipe? Thanks

[@Patrolman91.]

3/4 inch thread connector

[@DrCantFix]

This looks great! Thinking of doing a very similar project so wondering what pump you used? Wasn’t sure if need to match shower rating (L/h). How has it been running for you? Thanks!

[@pagcelt]

I initially used a central heating pump but it began to rust as it’s designed for central heating systems that have rust inhibitors added. I have now swapped this for a bronze pump that is designed for fresh water. www.ebay.co.uk/itm/183814671848

[@danielsaccone7501]

@@pagcelt would any bronze central heating pump be suitable?

[@WestysGate]

@@pagcelt what's the model number in the bronze one you used mate as the link doesn't work 😄

[@theMagicSnorkel]

@@WestysGate same question anyone come up with an alternative?

[@Patrolman91.]

I use a 12v Shurflow trail king pump on my setup.

[@MrMagicpaul69]

Is it a mid point valve and how have you wired it ?

[@ianthomson7419]

Can you advise on the parts used for this build, also how the wiring is hooked up

[@guinnessdublin4669]

With the 3-port wiring just connect the white (heating on) & grey (h/w satisfied) with the switch live from sonoff Wi-fi switch!

[@ianthomson7419]

@@guinnessdublin4669 hi thanks I tried that but didn’t seem to work so running with pump only but on it’s side instead of vertical, might try with the zone valve again

[@danielsaccone7501]

@@ianthomson7419 hi mate, did you ever get the sonoff to work? If so how did you wire it mate? And was mounting the pump I’m on its side better for any reason?

[@debbiehood1820]

Have a 12l boiler and a draper submersible running on garden hose but boiler keeps cutting out once water is above 25degress. Pump still running. Have to switch boiler off and back on. The boiler then runs for a couple of minutes and then cuts out seems like it's overheating won't run at all on winter setting can you help please

[@alastairloudon1020]

What make and model of hot tub as I don’t think I could just have the bike connected on my Layz Spa ?

[@rstubbington]

Hope someone can help. What stops the water being pushed back up the boiler outlet tube when the diverter valve is in the heating off position and it's bypassing the boiler inlet (since it then looks like it just arrives at a 2 way splitter with one going to the tub and the other to the boiler outlet)?

[@andrewdurman3922]

Had a very similar system but using a submersible pump 10 months on and the heat exchanger in the LPG heater is coursing Hot tub biofilm slime flushed the whole system twice and shocked it but still have the problem!

[@theMagicSnorkel]

I guessing the submersible pump method bypasses the original filter and then the system is simply circulation unfiltered water. Which is why this kind of setup is preety dam cool 😎

[@neilroadknight452]

Hi, ive set up a spa using the same pump to an 18ltr tankless boiler but i cant get the pump to pump no matter what i try. The pump is running. Any ideas?

[@paulball1767]

Could i use the pump of the spa to pump the water through the tankless boiler

[@TheHaza87]

How long does it take to warm up to temperature?

[@matastra]

Any chance on a new video with the new pump :)

[@matastra]

little more explination to what bsp adapters used from pump and what pipe would be amazing

[@dr.victorstrange6848]

What kind of WIFI switch is that? Ive never seen one with a thermostat before.

[@matastra]

Are you still using this way as im putting prices together to do this. Still cheaper than electric?

[@baldrickscunningplan6154]

I used a 18litre 36kw gas heater. I modified the burn chamber so that it can be used inside a summerhouse. Has a flue pipe out through the roof of the summerhouse. I modified the Egg so that i can still use the controls on top of the Egg to control the tub temperature. Filter pump ,timer and bubbles. I can also use the Egg pump to filter the water whilst it is heating. I took out the ceramic heater and replaced it with a 240volt to 12 volt power supply. ie the 240 volt supply that originally powered the ceramic heater now powers the power supply. That power supply runs a 12 volt pump that runs through the gas heater. The pipes from the gas heater are tee connected inside the Egg so i dont have any pipes dangling inside the tub. I also installed a module timer that resets the boiler every 15 minutes so that it avoids the 20 minute inbuilt shut off timer in the boiler. Mine raises the temp in the tub 20 degrees an hour. kzbin.info/www/bejne/imjOfKqIg5qgadk

[@japanfred]

Please post some pics/video of this, I’m looking to do similar!

[@richp516]

Yeah some pics or video please that would be great as I'm looking at doing something like this

[@richp516]

Anything yet baldrick ? Cheers pal

[@baldrickscunningplan6154]

@@richp516 I am going to make a video shortly. I will be doing a further mod this week. Using a much smaller 12 volt pump. The diaphragm pump that i have been using is being discarded. This is the pump i will be using. www.ebay.co.uk/ipp/154256619838?transactionId=2134613915005&_trksid=p2047675.l48352

[@richp516]

@@baldrickscunningplan6154 thanks pal i am just getting my bits together , heater is here fast fit pipework at weekend.

[@guinnessdublin4669]

Brilliant idea using a 3 port & Wi-fi with temp probe. Did experiment myself with a solar panel using 10mm copper, worked but had to stop/start to allow it to heat up.Where did you get Wi-fi & temp probe from please?

[@pagcelt]

The WiFi switch is a sonoff TH16, supplied with the temp probe. Available on eBay and Amazon.

[@guinnessdublin4669]

pagcelt okay thanks did find that model when looking & see they do an extension cable for probe also! 👍🏻

[@TheRaceface22]

Brilliant mate

[@tonyprice6765]

Hello good job that mate I am just doing my job with the same process as yours I have got the red pump what you’ve got do you think I should just go straight to a bronze pump then thanks Tony

[@pagcelt]

Sorry for the late reply! Yes, I would go for the bronze pump straight off the bat.

[@richp516]

Hi Tony, how did you get on with your set up, i am doing mine this week like this set up.

[@tonyprice6765]

@@richp516 hello I had a bronze pump on then it broke so I just use a submersible pump work a treat I control it from my phone it as saved me a lot of money just started on 2 gas bottle

[@richp516]

@@tonyprice6765 thanks Tony, did you also use the 3 port ?

[@tonyprice6765]

@@richp516 no cos I have to make mine portable it on the Dance floor when I have a party 😆👍

[@adambartlett7087]

Does anyone who has done this have a parts list please? I have all the large items, it’s just the fittings between the rigid and flexible hoses I am struggling to size and source.

[@paulball1767]

What pump are you useing please

[@richardtweddle800]

Hi mate great setup. Im setting up something similar. I brought a bronze pump similar to yours. How do you get the pump to work? I turn mine on but it wont "suck" the water from the tub. How did u get urs to work? Thanks

[@FreshfrogmarketingUk]

You need the pump to be below the connection on the tub so gravity makes the water run into the pump.

[@obviouslytwo4u]

Turn it up really high and cook some pasta

[@baldrickscunningplan6154]

What happens when the inbuilt timer shuts off the boiler after 20 minutes?

[@tonyprice6765]

Hello you can get a internet plug what you can turn on and off on your phone 20mins 1mins of 20mis on until it’s hot 👍

[@baldrickscunningplan6154]

@@tonyprice6765 Good idea. I have bypassed mine with a programmable timer module. resets the boiler every 15 minutes.

[@StevenSingerIT]

Where did you get those plastic adapters that fit the hot tub side wall?

[@tristantalbot4408]

It's where the pool heater used to be what you do is get a quick connect hose head to make it plug into a hose

[@CalMUK91]

Hi mate can you help me. I have a very similar set up (never seen this video so minds thing alike hahah) I have a central heating pump and an 8L LPG heater. Issue is, I can't for the life of me get the heater to burn right. Its running a 37mbar reg on a 6kg bottle. Yet the flames are yellow and sooting. Yesterday when testing it I set fire to my fence (no joke) 🤣. So all I can think is I have a bad regulator? But the manual asks for a 28mbar reg and no one sells one. Also the gas knob does nothing.

[@theMagicSnorkel]

Did u sort this?

[@robertsteffen469]

hi can you email me please i am trying to set up something same as you did please