Vacuum pump for air conditioners: types, how to choose


Vacuuming the air conditioner

Vac­u­um­ing is the process of remov­ing var­i­ous gas­es and water vapor from the air con­di­tion­er.

This process is car­ried out using a vac­u­um pump.

Usu­al­ly, evac­u­a­tion is car­ried out before fill­ing the cool­ing device with refrig­er­ant or fre­on.

If you do not use the pump­ing of gas­es and water vapor with a vac­u­um device, the air con­di­tion­er will fail or its ser­vice life will be reduced. due to the fact that air mol­e­cules lead to a sig­nif­i­cant increase in pres­sure, lead­ing to an increased load on the com­pres­sor.

The principle of operation of the pump for pumping air

The basic prin­ci­ples of oper­a­tion of these units are to remove or bind gas­es out­side the air con­di­tion­er. Vac­u­umer, remov­ing var­i­ous gas­es and water vapor, cre­ates a vac­u­um and low pres­sure, which leads to a decrease in the boil­ing point of water.

Value air conditioner pumpIn case of removal
them, a cer­tain vol­ume of the air mix­ture is iso­lat­ed and moved to the out­let pipe. In case of bind­ingneu­tral gas mol­e­cules set­tle on a sol­id sur­face or are car­ried away with a jet of liq­uid, vapor, cre­at­ing the nec­es­sary vac­u­um.

Thus, in var­i­ous ways, liq­uid and gaseous mix­ture is removed in the cool­ing device.

Video about evac­u­at­ing the air con­di­tion­er:

Types of vacuum pumps

There are two main types: low and high vac­u­um.

Low vac­u­um sub­di­vid­ed into:

  • rotary vanethe high­est qual­i­ty two-stage with a vac­u­um gauge, which are able to reg­u­late the resid­ual pres­sure;
  • two-rotor or two-stage, with two rotat­ing rotors that cap­ture the gas­es, push­ing them to the dis­charge pipe, by increas­ing the pres­sure inside the air con­di­tion­er. At the same time, the pumped air must be non-aggres­sive to the com­po­nents and the work­ing flu­id, which is used to bind gas­es;
  • liq­uid ring or water ringpro­vid­ing fast and oil-free pump­ing of var­i­ous sub­stances, with­out envi­ron­men­tal pol­lu­tion and allow­ing pump­ing when liq­uid vapors are con­tained in the tank.

High vac­u­um There are also sev­er­al types:

  • dif­fu­sionwhich have high speed and per­for­mance, with syn­thet­ic oils as a work­ing flu­id, which fur­ther pol­lute the pumped gas mix­ture;
  • cryad­sorp­tionwith liq­uid nitro­gen, which freezes out gas­es, strong­ly warm­ing up the appa­ra­tus itself;
  • het­ero­ge­neousthe most expen­sive and very effec­tive, as they allow you to make a clean vac­u­um with­out pol­lu­tion.

How to choose a vacuum cleaner for an air conditioner?

Choose it for you need to take into account:

  • tech­ni­cal char­ac­ter­is­tics of the air con­di­tion­er, which will cre­ate an opti­mal micro­cli­mate in the room;
  • dura­tion of use of the device;
  • the size of the pipeline from which the gas mix­ture is pumped out.

At the same time, the vac­u­um appa­ra­tus must meet the fol­low­ing require­ments:

  • pro­vide a cer­tain lev­el of pres­sureguar­an­tee­ing effi­cient and long-term oper­a­tion of the air con­di­tion­er;
  • ease of usewhich implies an accept­able weight, oil lev­el indi­ca­tor, low vibra­tion, have a set of fit­tings and a valve to release bal­last air, etc.;
  • pos­si­bil­i­ty work in var­i­ous con­di­tions.

How to make a vacuum pump for an air conditioner with your own hands?

How to make a vacuum pump with your own hands?At home, you can assem­ble var­i­ous vac­u­um devices for pump­ing gas­es and water vapor from air con­di­tion­ers; all you need is a car pump and an aquar­i­um com­pres­sor.

First you need unwind the car air infla­tor, then turn the cuff over, assem­bling the mech­a­nism in reverse order. In this case, the invert­ed cuff will allow you to pump air out of the tank.

At the next stage installing a check valve by using the plas­tic part that is inside the aquar­i­um com­pres­sor. By installing a valve between the hose and the car pump, it is very easy to build this device at home.

This device can also be built from an aquar­i­um com­pres­sor by replac­ing plas­tic valves in places. On the com­pres­sor, the fas­ten­ers are unscrewed, the struc­ture is dis­as­sem­bled, which includes a part with valves in order to swap them.

Next, you will have to saw off the cor­ner of the com­pres­sor hous­ing and assem­ble the mech­a­nism in reverse order and drill a holewhich will serve to remove water vapor, into which a tube is insert­ed to drain con­den­sate.

How to puri­fy water from a well? Iron removal meth­ods and water qual­i­ty stan­dards in this arti­cle.

What is a dehu­mid­i­fi­er and why is it need­ed? How to col­lect it from the refrig­er­a­tor with your own hands?

How to equip ven­ti­la­tion in a pri­vate house with your own hands?‑chastnom-dome-svoimi-rukami-shema.html We choose a ven­ti­la­tion sys­tem and draw up a project.

The main models and manufacturers of vacuum pumps for air conditioners and the cost

Popular models of vacuum pumpsThere are a vari­ety of vac­u­um clean­ers that allow you to pump out air, dif­fer­ing from each oth­er in the lev­el of vac­u­um­ing, pow­er and man­u­fac­tur­er. There are man­u­fac­tur­ers on the mar­ket such as VALUE, ZENSEN, BECOOL, CPS, ERRECOM, MASTER, COOL, TELSTAR, Z with prices from 50 euros to 500 euros.

If we look at the mod­els in more detail, then the prices of the man­u­fac­tur­er VALUE are 70–350 euros, ZENSEN — 50–320 euros, BECOOL — 60–220 euros, CPS — 150–500 euros, ERRECOM — 180–250 euros, TELSTAR — 350- 400 euros, Z — 50–130 euros. Rental prices start from 500–7 dol­lars per day.

If you assem­ble a device for pump­ing air with your own hands, then this will not require any invest­ment, you only need to have a car pump or an aquar­i­um com­pres­sor.


Vac­u­um pumps are pri­mar­i­ly designed to remove gas mol­e­cules and water vapor from the air con­di­tion­ing sys­tem.

If they are not removed, the pres­sure inside the sys­tem increas­es, which increas­es the load on the com­pres­sor, reduc­ing the amount of cold air. All this, ulti­mate­ly, leads to the decom­po­si­tion of fre­on and the fail­ure of the air con­di­tion­er.

On the mar­ket there are a large num­ber of devices for pump­ing air from var­i­ous man­u­fac­tur­ers, with dif­fer­ent dimen­sions, capac­i­ties and prices.

Leave a Reply

You May Also Like