Electro-water heated floor


In the cur­rent con­di­tions, the con­sumer has great tech­ni­cal capa­bil­i­ties in terms of arrang­ing their own hous­ing. The pre­vi­ous­ly lim­it­ed range of heat­ing equip­ment has expand­ed today. New equip­ment appears on the mar­ket, tech­ni­cal inno­va­tions and the lat­est tech­nolo­gies are being intro­duced in the home heat­ing clus­ter. Warm floors in this aspect today occu­py one of the lead­ing places. The very method of heat­ing inter­nal liv­ing quar­ters due to under­floor heat­ing in prac­tice turned out to be much more effi­cient and eco­nom­i­cal.

In addi­tion, for design­ers with the instal­la­tion of under­floor heat­ing in the room, unique oppor­tu­ni­ties for imple­men­ta­tion in the field of inte­ri­ors open up. Choos­ing under­floor heat­ing sys­tem, you will be able to make your home warm, cozy and, above all, com­fort­able. Under­floor heat­ing can be used as the main heat­ing option in the house or made it an aux­il­iary tech­ni­cal means of heat­ing.

The scope of under­floor heat­ing is deter­mined by the tasks that you set for the heat­ing sys­tem. Hence the ques­tion aris­es. What type of under­floor heat­ing to choose, elec­tric or water? Is there a rea­son­able “gold­en mean” in this case?

Electric water heated floor — the “know-how” of our time

Each of us is famil­iar with water heat­ing sys­tems. We are used to the fact that hot water cir­cu­lates through our bat­ter­ies. The lion’s share in the autonomous heat­ing seg­ment is occu­pied by heat­ing devices, in which the main work is per­formed by a liq­uid heat car­ri­er. Due to the high effi­cien­cy, liq­uid heat­ing sys­tems remain one of the most pop­u­lar heat­ing options. A warm water floor in this regard is the most suc­cess­ful engi­neer­ing and tech­ni­cal solu­tion. How­ev­er, in recent years, a com­plete­ly new heat­ing sys­tem has appeared, elec­tric water, uni­ver­sal under­floor heat­ing.

This design is a com­bi­na­tion of elec­tric heat­ing and liq­uid heat­ing method.

For ref­er­ence: why is it cor­rect to say liq­uid, and not elec­tric, water-heat­ed floor? The thing is that not ordi­nary water is used as a coolant in this sys­tem, but antifreeze and its var­i­ous mod­i­fi­ca­tions.


As a result of com­pe­tent tech­ni­cal solu­tions, this option man­aged to incor­po­rate all the best qual­i­ties and char­ac­ter­is­tics of the elec­tric heat­ing cir­cuit and water heat­ed floors. The tech­nol­o­gy is based on the prin­ci­ple of inter­ac­tion between heat and pres­sure. Dur­ing the oper­a­tion of the elec­tri­cal ele­ment, the liq­uid inside the heat­ing cir­cuit is heat­ed.

The heat­ing cir­cuit is a sealed plas­tic chan­nel filled with antifreeze. In the mid­dle of the plas­tic pipe, a nick­el-chromi­um cable runs along its entire length. This is one fun­da­men­tal dif­fer­ence between this mod­el and a con­ven­tion­al water-heat­ed floor, where heat­ed boil­er water cir­cu­lates through the heat­ing cir­cuit. Lay­ing a plas­tic chan­nel with elec­tric heat­ing is car­ried out in the same way as installing a water pipe for a warm floor. The same schemes for lay­ing heat­ing cir­cuits are used: snail, spi­ral or snake. Elec­tric water floor is designed for instal­la­tion under the screed.

Eval­u­at­ing the design device, the prin­ci­ple of oper­a­tion and the lay­ing tech­nol­o­gy, you can safe­ly get to work, mak­ing such a warm floor with your own hands.

Advantages of the combination of electricity and heat transfer fluid

The main and main advan­tage that the new elec­tric water cir­cuit of under­floor heat­ing has is the absence of com­plex addi­tion­al equip­ment. With­out a pump­ing and mix­ing unit, a man­i­fold, safe­ty valves and flow meters, it is dif­fi­cult to imag­ine a full-fledged water-heat­ed floor in work­ing con­di­tion. In the case of elec­tric water floors, the sit­u­a­tion is rad­i­cal­ly dif­fer­ent. The sys­tem does not require the instal­la­tion of a whole range of ser­vice devices, devices and units.

On a note: If you have the funds, it is bet­ter to invest in the pur­chase of a com­bined heat­ing sys­tem. Do-it-your­self elec­tric water heat­ed floor is quite real. Such a solu­tion will save you from ther­mal cal­cu­la­tions, tech­no­log­i­cal­ly com­plex instal­la­tion of a col­lec­tor and a pump.

Oth­er advan­tages of this sys­tem include the fol­low­ing aspects:

  • the sys­tem even­ly heats the floor sur­face to the set tem­per­a­ture val­ues;
  • quick out­put of heat­ing equip­ment to opti­mal oper­at­ing para­me­ters;
  • auto­mat­ic con­trol;
  • safe oper­a­tion;
  • extreme­ly low pow­er con­sump­tion;
  • quick and easy instal­la­tion.

There is a clear improve­ment to the hot water floors that are well known to all of us. Due to new tech­nolo­gies, it was pos­si­ble to exclude a num­ber of com­plex and expen­sive units and mech­a­nisms from the sys­tem design. In addi­tion, the com­bined sys­tem can be used for heat­ing any res­i­den­tial premis­es. Of par­tic­u­lar inter­est is the fact that the elec­tric water heat­ing cir­cuit is equal­ly effec­tive when oper­at­ing in dif­fer­ent tem­per­a­ture con­di­tions. Such heat­ing can be installed for heat­ing in rooms of any area (as far as there are enough funds).

Impor­tant! The effi­cien­cy of elec­tric water floors reach­es almost 100%. The heat­ed floor retains heat for a long time, even after the heat­ing cir­cuit has been switched off.


From an envi­ron­men­tal and safe­ty point of view, this scheme is prac­ti­cal­ly safe. Auto­mat­ic adjust­ment elim­i­nates over­heat­ing of the heat­ing ele­ments. Accord­ing­ly, the set tem­per­a­ture will always be main­tained in the heat­ed room. When equip­ping this heat­ing option, you can use almost any floor cov­er­ing.

On a note: the asser­tion that an elec­tri­cal cable laid over a large area can cause neg­a­tive elec­tro­mag­net­ic radi­a­tion is a myth.

Lit­tle can be said about the short­com­ings of an elec­tric water heat­ed floor. Com­pared to a water floor, heat­ing costs will slight­ly exceed the usu­al amounts. A one-time invest­ment when buy­ing equip­ment can also sig­nif­i­cant­ly affect your bud­get. How­ev­er, in the com­plex, there are no seri­ous dis­ad­van­tages from such a heat­ing sys­tem in the prac­ti­cal plane.

Varieties of the system. Device and principle of operation

Today on the mar­ket of heat­ing equip­ment in the floor heat­ing seg­ment, there are two mod­els:

  • prod­ucts of the Kore­an com­pa­ny Dae­woo Enertec, warm water elec­tric floors XL Pipe (XL Pipe);
  • prod­uct of the Kore­an com­pa­ny Caleo, cap­il­lary warm elec­tric floor UNIMAT AQUA.

The lat­ter option has domes­tic coun­ter­parts, which are pro­duced under license at Euro­pean enter­pris­es.

Both the first heat­ing sys­tem and the sec­ond have some dif­fer­ences in the design and prin­ci­ple of oper­a­tion of the heat­ing ele­ments, although every­thing else, instal­la­tion and oper­a­tion are exact­ly the same.

Warm electric water floors XL Pipe


Con­sid­er what is the design fea­ture of the heat­ing sys­tem, using elec­tric­i­ty. For the first acquain­tance, let’s take the heat­ing sys­tem, elec­tric water heat­ed floors XL Pipe (XL Pipe). The nov­el­ty in this case is the very struc­ture of the heat­ing ele­ment. A heat­ing cable is laid in the basis of a poly­eth­yl­ene pipe (walls 20 mm thick), along the entire length. It is impor­tant that this is not a sim­ple cable, but woven nick­el-chromi­um threads enclosed in a Teflon sheath. The rest of the inter­nal space of the plas­tic pipe is filled with a liq­uid heat car­ri­er, which is in a sta­t­ic state. The pipe is a her­met­i­cal­ly sealed sin­gle cir­cuit.

Obvi­ous­ly, in this case, you do not need either a pump or a man­i­fold. The fig­ure-dia­gram clear­ly shows the inter­nal struc­ture of the heat­ing cir­cuit, the appear­ance of the plas­tic pipe and an approx­i­mate lay­out of the XL Pipe brand elec­tric water floor.

The coolant in this case is antifreeze, so the sys­tem should be cor­rect­ly called an elec­tro-flu­id heat­ed floor. Using the ther­mal ener­gy from the heat­ing of the elec­tri­cal ele­ment, the coolant is even­ly heat­ed along the entire length of the heat­ing cir­cuit.

On a note: unlike tra­di­tion­al water floors, where the coolant has dif­fer­ent tem­per­a­tures in dif­fer­ent parts of the water loop, the elec­tro-liq­uid cir­cuit guar­an­tees uni­form heat­ing of the floor sur­face over the entire area.

The prin­ci­ple of oper­a­tion of the under­floor heat­ing sys­tem in this case is based on the inter­ac­tion of the heat­ing ele­ment with tem­per­a­ture con­trol sen­sors. The ther­mo­stat is one of the main devices for any heat­ing sys­tem, so in this case you can­not do with­out it.


Elec­tric water heat­ed floor oper­ates accord­ing to the fol­low­ing prin­ci­ple:

  • The first is engage­ment. Pow­er pro­vides heat­ing of the elec­tric cable, which in turn heats the coolant sur­round­ing it.
  • The sec­ond is the expan­sion of the heat­ed coolant. Due to the fact that the vol­ume of liq­uid is small, and the pow­er of the cable is large, heat­ing occurs inten­sive­ly.
  • The third is an increase in the vol­ume of the heat­ed liq­uid, there­by cre­at­ing increased pres­sure inside the plas­tic pipe (bub­ble boil­ing).
  • Fourth — a quick exit of the warm floor to the oper­at­ing modes of heat­ing.

Here it is worth say­ing a lit­tle about the costs of the oper­a­tion of the elec­tri­cal ele­ment asso­ci­at­ed with the heat­ing of the coolant. Ener­gy con­sump­tion in this case is 14.4 ‑15W per sq. meter of under­floor heat­ing, which is sig­nif­i­cant­ly low­er than required when using con­ven­tion­al elec­tric floors. Due to the liq­uid heat car­ri­er, even a dis­abled warm floor cools down two, three times slow­er than a cable heat­ing sys­tem.

Capillary warm electric floor

Anoth­er option for elec­tric water floors, cap­il­lary, is built on a dif­fer­ent prin­ci­ple of oper­a­tion. Here lies the main dif­fer­ence between the sys­tem: the small diam­e­ter of the heat­ing pipe, which is why such a name arose. The plas­tic tube is con­nect­ed to a small elec­tric heat­ing device, which is both an elec­tric heater and a feed­er for the entire heat­ing cir­cuit. The device con­trols the heat­ing tem­per­a­ture, pro­vides heat­ing of the heat trans­fer flu­id and cre­ates a work­ing pres­sure in the sys­tem. As in the case of the first ver­sion of the elec­tric water heat­ing equip­ment, this option is a closed her­met­ic sys­tem.

On a note: the small diam­e­ter of the water pipe will require you to fill in only 5–6 liters of dis­tilled water, there­fore, to heat this amount of coolant, the pow­er of an elec­tri­cal appli­ance of 2.4 kW is enough.

Instal­la­tion of such a heat­ing sys­tem is best done through the con­nec­tion of the RCD and equip­ping the entire com­plex with an auto­mat­ic machine.

This com­bined floor heat­ing sys­tem is designed for heat­ing small spaces. It is allowed to install the sys­tem in rooms whose area does not exceed 20 m2.

The advan­tages of a cap­il­lary heat­ing sys­tem are as fol­lows:

  • wide func­tion­al­i­ty of the heat­ing block;
  • the pres­ence of an anti-freeze mode;
  • auto­mat­ic con­trol of the heat car­ri­er heat­ing tem­per­a­ture depend­ing on the tem­per­a­ture inside the room;
  • adjust­ment of the pow­er of the heat­ing device in the range of 0.1 — 2.4 kW.
  • hav­ing a timer.

Installation of underfloor heating electro liquid type


There is no fun­da­men­tal dif­fer­ence in the instal­la­tion of elec­tric water floors from tra­di­tion­al water heat­ing under­floor sys­tems. In both the first and sec­ond cas­es, the heat­ing pipes are laid under the screed.

In order to do the instal­la­tion of the floor with your own hands, you will need ther­mal insu­la­tion mate­ri­als, a damper tape, a met­al or foil heat exchang­er. All these ele­ments are the com­po­nents of a puff cake, which is always present when lay­ing under­floor heat­ing. The main task in the instal­la­tion process that you face con­sists of two points:

  • com­pe­tent­ly equip a heat-insu­lat­ing lay­er, which will play the role of a ther­mal bar­ri­er. The heat-insu­lat­ing lay­er pre­vents heat from leak­ing down, increas­ing the effi­cien­cy of heat­ing the floor sur­face;
  • use a cor­rect­ly select­ed scheme in the process of lay­ing the heat­ing cir­cuit;
  • install con­trol and reg­u­la­tion devices in a con­ve­nient and acces­si­ble place.

Lay­ing an elec­tric water floor dif­fers from installing water loops in that there is no need to bring pipes out­side. You don’t have a col­lec­tor. All heat­ing cir­cuits are con­nect­ed to a dis­trib­u­tor, which can be placed in two ver­sions:

  • direct­ly on the floor, sub­se­quent­ly poured with con­crete along with heat­ing pipes;
  • on the wall, at a dis­tance of 10–15 cm from the sur­face of the con­crete screed;

The pow­er and con­trol wires are brought out, con­nect­ing to the ther­mo­stat. This is fol­lowed by all the same, well-known wet work, pour­ing con­crete screed. The rec­om­mend­ed thick­ness of the screed when work­ing with warm elec­tric water floors is 30–50 mm. No longer worth it, not enough pow­er, less is also not rec­om­mend­ed. A thin screed can be dam­aged mechan­i­cal­ly, caus­ing dam­age to the heat­ing cir­cuit.

On a note: there is no need to lay heat­ing ducts over all areas of the heat­ed room. It is pos­si­ble to cre­ate elec­tric water heat­ing of a sin­gle sec­tion of the room. The oper­a­tion of such a site will be autonomous and not depend on the oper­a­tion of the home heat­ing sys­tem.

When work­ing with this type of heat­ing equip­ment, it is bet­ter to use the heat­ing pipe lay­ing scheme — a dou­ble snake. The rec­om­mend­ed step for lay­ing the con­tour is 10–15cm. Do not for­get that the max­i­mum dis­tance from the walls for lay­ing heat­ing cir­cuits is 10–15 cm.


In mod­ern con­di­tions, you can quite suc­cess­ful­ly equip your house, apart­ment or oth­er domes­tic premis­es with a fair­ly effi­cient heat­ing sys­tem on your own. Warm floors have already proved in prac­tice their effec­tive­ness, effi­cien­cy and con­ve­nience. Liq­uid under­floor heat­ing sys­tems using elec­tric­i­ty take such sys­tems to a whole new lev­el. The prin­ci­ple here is less has­sle, more com­fort. Choose what to put at home, a water heat­ing sys­tem or give pref­er­ence to liq­uid elec­tric heat­ing devices.


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