❄️ HVAC

• air filter AIR FIL-ter ▶ EN
  filtro de aire FEEL-troh deh AI-reh ▶ ES

  The pleated or fiberglass pad that catches dust before air hits the coil and blower.

  Change the air filter and note the arrow points toward the blower. — Cambia el filtro de aire y fíjate que la flecha apunte hacia el soplador.

  Also: filtro (general)

• air handler AIR HAND-ler ▶ EN
  manejadora de aire mah-neh-hah-DOH-rah deh AI-reh ▶ ES

  The indoor box with the blower and the coil that moves air through the ductwork.

  The air handler goes in the attic, on the platform we built. — La manejadora de aire va en el ático, sobre la plataforma que hicimos.

  Also: unidad manejadora (general) · manejadora (MX)

• balancing BAL-un-sing ▶ EN
  balanceo bah-lahn-SEH-oh ▶ ES

  Adjusting dampers and registers so every room gets the airflow the plans call for.

  We start balancing tomorrow once all the registers are in. — Empezamos el balanceo mañana en cuanto estén puestas todas las rejillas.

  Also: balanceo de aire (general) · balanceo (MX)

• bath fan BATH FAN ▶ EN
  extractor de baño eks-trak-TOR deh BAH-nyoh ▶ ES

  The small ceiling exhaust fan that pulls moisture out of a bathroom.

  Every bath fan needs a backdraft damper and a roof cap. — Cada extractor de baño necesita compuerta antirretorno y su sombrero en el techo.

  Also: extractor de baño (general) · abanico del baño (MX)

• blower BLOH-er ▶ EN
  soplador soh-plah-DOR ▶ ES

  The caged fan wheel inside the unit that pushes air through the ducts; guys call the wheel a squirrel cage.

  Pull the blower and wash the squirrel cage, it's packed with lint. — Saca el soplador y lava la jaula de ardilla, está llena de pelusa.

  Also: ventilador centrífugo (general) · turbina (MX)

• blower motor BLOH-er MOH-ter ▶ EN
  motor del soplador moh-TOR del soh-plah-DOR ▶ ES

  The electric motor that spins the blower wheel.

  The blower motor is drawing high amps and getting hot; it's going out. — El motor del soplador está jalando muchos amperes y se calienta; ya se va a quemar.

  Also: motor del ventilador (general) · motor de la turbina (MX)

• boot BOOT ▶ EN
  bota BOH-tah ▶ ES

  The sheet metal fitting that transitions from round duct to the rectangular register opening.

  Nail the boot to the joist before drywall goes up. — Clava la bota a la viga antes de que pongan el tablaroca.

  Also: caja de conexión (general) · bota (MX)

• brazing BRAY-zing ▶ EN
  soldadura fuerte sohl-dah-DOO-rah FWER-teh ▶ ES Safety-critical

  Joining copper refrigerant lines with silver alloy and a torch, flowing nitrogen through to stop scale.

  Flow nitrogen while brazing and keep a fire extinguisher and a wet rag next to you. — Pasa nitrógeno mientras haces la soldadura fuerte y ten un extintor y un trapo mojado a un lado.

  Also: soldadura de plata (general) · soldar con plata (MX)

• BTU BEE-TEE-YOO ▶ EN
  BTU beh-teh-OO ▶ ES

  British thermal unit, the standard measure of heating or cooling output.

  That furnace is 80,000 BTU input, 64,000 output. — Ese calefactor es de 80,000 BTU de entrada y 64,000 de salida.

  Also: unidad térmica británica (general)

• CFM SEE-EF-EM ▶ EN
  pies cúbicos por minuto PYEHS KOO-bee-kohs por mee-NOO-toh ▶ ES

  Cubic feet per minute, the measure of how much air the system moves.

  That room needs 120 CFM and it's only getting 60. — Ese cuarto necesita 120 pies cúbicos por minuto y nomás le llegan 60.

  Also: caudal de aire (general) · CFM (MX)

• combustion air kum-BUS-chun AIR ▶ EN
  aire para combustión AI-reh PAH-rah kohm-boos-TYOHN ▶ ES Safety-critical

  The fresh air a gas appliance needs to burn clean; starve it and it makes carbon monoxide.

  That closet needs two combustion air openings, high and low. — Ese clóset necesita dos aberturas de aire para combustión, una arriba y otra abajo.

  Also: aire de combustión (general)

• compressor kum-PREH-ser ▶ EN
  compresor kohm-preh-SOR ▶ ES

  The pump in the outdoor unit that squeezes the refrigerant and moves it through the system.

  The compressor is humming but not starting; check the run capacitor. — El compresor zumba pero no arranca; revisa el capacitor de marcha.

  Also: compresor (general)

• condensate drain KON-den-sayt DRAYN ▶ EN
  drenaje de condensado dreh-NAH-heh deh kohn-den-SAH-doh ▶ ES

  The pipe that carries the water dripping off the cold coil out of the building.

  The ceiling is stained because the condensate drain is plugged. — El techo está manchado porque el drenaje de condensado está tapado.

  Also: desagüe de condensado (general) · drenaje del condensado (MX)

• condensate pump KON-den-sayt PUMP ▶ EN
  bomba de condensado BOHM-bah deh kohn-den-SAH-doh ▶ ES

  A small pump that lifts condensate water up and out when gravity drain isn't possible.

  The basement unit needs a condensate pump, there's no fall to the outside. — El equipo del sótano necesita bomba de condensado, no hay caída hacia afuera.

  Also: bomba de drenaje (general)

• condenser kun-DEN-ser ▶ EN
  condensadora kohn-den-sah-DOH-rah ▶ ES

  The outdoor unit with the fan and compressor that dumps heat outside.

  Set the condenser on the pad and leave two feet of clearance all around. — Pon la condensadora sobre la base y déjale dos pies libres por todos lados.

  Also: unidad condensadora (general) · condensadora (MX)

• damper DAM-per ▶ EN
  compuerta kohm-PWER-tah ▶ ES

  A movable plate inside the duct that opens or closes to control airflow.

  Close the damper halfway on that branch, the bedroom is getting too much air. — Cierra la compuerta a la mitad en esa rama, a la recámara le llega mucho aire.

  Also: dámper (general) · compuerta (MX)

• diffuser dih-FYOO-ser ▶ EN
  difusor dee-foo-SOR ▶ ES

  A ceiling outlet that spreads supply air out in a pattern instead of blowing it in one stream.

  Center the diffuser in the ceiling tile, not off to one side. — Centra el difusor en la loseta del plafón, no lo dejes de ladito.

  Also: difusor de techo (general)

• duct DUKT ▶ EN
  ducto DOOK-toh ▶ ES

  The metal or fiberglass channel that carries conditioned air from the equipment to the rooms.

  Run the duct through the joist bay and keep it straight. — Corre el ducto por entre las vigas y mantenlo derecho.

  Also: conducto de aire (general) · ducto (MX)

• duct tape DUKT TAYP ▶ EN
  cinta para ducto SEEN-tah PAH-rah DOOK-toh ▶ ES

  Foil-backed tape rated for ducts; the cloth gray tape at the hardware store is not code-approved.

  Use UL-listed foil duct tape, the gray stuff dries out and falls off. — Usa cinta de aluminio con listado UL, la gris se seca y se cae.

  Also: cinta de aluminio (general) · cinta plateada (MX)

• ductboard DUKT-bord ▶ EN
  panel de fibra para ducto pah-NEL deh FEE-brah PAH-rah DOOK-toh ▶ ES

  Rigid fiberglass board with foil facing that gets cut and folded into duct.

  Build the return plenum out of ductboard and staple the seams tight. — Arma el plenum de retorno con panel de fibra y engrapa bien las juntas.

  Also: ductoboard (general) · panel de fibra de vidrio (MX)

• economizer ee-KON-oh-mai-zer ▶ EN
  economizador eh-koh-noh-mee-sah-DOR ▶ ES

  The damper section on a rooftop unit that uses cool outside air for free cooling.

  The economizer is stuck open, that's why the space won't hold temp. — El economizador está atorado abierto, por eso el espacio no mantiene la temperatura.

  Also: economizador de aire (general)

• elbow EL-boh ▶ EN
  codo KOH-doh ▶ ES

  A duct fitting that turns the run, usually 90 or 45 degrees.

  Use two 45 elbows instead of one 90, you'll lose less air. — Usa dos codos de 45 en vez de uno de 90, pierdes menos aire.

  Also: codo de ducto (general)

• evaporator coil ee-VAP-oh-ray-tor KOIL ▶ EN
  serpentín evaporador ser-pen-TEEN eh-vah-poh-rah-DOR ▶ ES

  The indoor coil where refrigerant absorbs heat and the air gets cold and dry.

  The evaporator coil is iced up, that's why there's no air. — El serpentín evaporador está congelado, por eso no sale aire.

  Also: evaporador (general) · serpentín evaporador (MX)

• exhaust fan eg-ZAWST FAN ▶ EN
  extractor eks-trak-TOR ▶ ES

  A fan that pulls stale, hot, or greasy air out of a space and dumps it outside.

  The exhaust fan has to duct outside, not into the attic. — El extractor tiene que salir por ducto hasta afuera, no al ático.

  Also: ventilador de extracción (general) · extractor (MX)

• fan belt FAN BELT ▶ EN
  banda del ventilador BAHN-dah del ven-tee-lah-DOR ▶ ES

  The rubber V-belt that drives a belt-driven blower off the motor pulley.

  That squeal is the fan belt; check the tension and the sheave alignment. — Ese chillido es la banda del ventilador; revisa la tensión y la alineación de las poleas.

  Also: correa del ventilador (general) · banda (MX)

• fire damper FAI-er DAM-per ▶ EN
  compuerta contra incendio kohm-PWER-tah KOHN-trah een-SEN-dyoh ▶ ES Safety-critical

  A damper with a fusible link that slams shut in a fire so flames cannot travel through the duct.

  Every duct that crosses a rated wall needs a fire damper, no exceptions. — Todo ducto que cruce un muro con clasificación necesita compuerta contra incendio, sin excepción.

  Also: compuerta cortafuego (general) · compuerta contra incendio (MX)

• flex duct FLEKS DUKT ▶ EN
  ducto flexible DOOK-toh flek-SEE-bleh ▶ ES

  Insulated flexible tubing with a wire coil inside, used for short runs to registers.

  Pull the flex duct tight, no sags, and strap it every four feet. — Estira bien el ducto flexible, que no cuelgue, y amárralo cada cuatro pies.

  Also: manguera de aire (general)

• flue FLOO ▶ EN
  chimenea chee-meh-NEH-ah ▶ ES Safety-critical

  The vent pipe that carries combustion gases from the furnace or water heater safely outside.

  The flue is disconnected in the attic; that's dumping exhaust into the house. — La chimenea está desconectada en el ático; está botando los gases dentro de la casa.

  Also: tubo de ventilación (general) · tiro (MX)

• furnace FUR-ness ▶ EN
  calefactor kah-leh-fak-TOR ▶ ES

  The heating unit that burns gas or uses electric heat and blows warm air through the ducts.

  The furnace won't fire; check the igniter first. — El calefactor no enciende; primero revisa el ignitor.

  Also: horno de calefacción (general) · calefactor (MX)

• gas line GAS LAIN ▶ EN
  línea de gas LEE-neh-ah deh GAHS ▶ ES Safety-critical

  The black iron or CSST pipe that feeds fuel to the furnace; every joint gets leak-tested before lighting.

  Shut off the gas line at the valve before you break that union loose. — Cierra la línea de gas en la válvula antes de aflojar esa unión.

  Also: tubería de gas (general) · línea de gas (MX)

• gas valve GAS VALV ▶ EN
  válvula de gas VAHL-voo-lah deh GAHS ▶ ES Safety-critical

  The control valve on the furnace that opens to let gas into the burners; it must close fully every cycle.

  If you smell gas at the valve, shut it down and don't relight it. — Si hueles gas en la válvula, apágala y no la vuelvas a encender.

  Also: válvula de combustible (general) · válvula de gas (MX)

• hanger strap HANG-er STRAP ▶ EN
  fleje de soporte FLEH-heh deh soh-POR-teh ▶ ES

  The perforated metal or nylon strap that hangs duct from the framing.

  Hang the flex with wide hanger strap so it doesn't pinch the duct. — Cuelga el flexible con fleje ancho para que no estrangule el ducto.

  Also: cincho de soporte (general) · fleje (MX)

• heat exchanger HEET eks-CHAYN-jer ▶ EN
  intercambiador de calor een-ter-kahm-BYAH-dor deh kah-LOR ▶ ES Safety-critical

  The steel chamber that carries combustion heat into the airstream; a crack in it leaks carbon monoxide into the house.

  Red-tag it: the heat exchanger is cracked and it's making CO. — Ponle etiqueta roja: el intercambiador de calor está agrietado y está generando monóxido.

  Also: intercambiador térmico (general) · cámara de combustión (MX)

• heat pump HEET PUMP ▶ EN
  bomba de calor BOHM-bah deh kah-LOR ▶ ES

  A system that cools in summer and reverses to pull heat from outside air in winter.

  It's a heat pump, so the reversing valve switches it to heating mode. — Es bomba de calor, la válvula reversible la cambia a modo calefacción.

  Also: bomba de calor (general) · minisplit de calor y frío (MX)

• igniter ig-NAI-ter ▶ EN
  ignitor eeg-nee-TOR ▶ ES Safety-critical

  The hot-surface or spark device that lights the burners on a modern furnace.

  Kill the power before you touch the igniter; it's brittle and it's hot. — Corta la corriente antes de tocar el ignitor; es frágil y está caliente.

  Also: encendedor (general) · ignitor (MX)

• insulation wrap in-suh-LAY-shun RAP ▶ EN
  forro aislante FOH-rroh ais-LAHN-teh ▶ ES

  The foil-faced fiberglass blanket wrapped around metal duct to stop heat loss and sweating.

  Wrap that duct in R-8 insulation wrap and tape the seams. — Envuelve ese ducto con forro aislante R-8 y encinta las juntas.

  Also: aislamiento de ducto (general) · colchoneta (MX)

• leak test LEEK TEST ▶ EN
  prueba de fugas PRWEH-bah deh FOO-gahs ▶ ES Safety-critical

  Pressurizing lines with nitrogen and checking with bubbles or a detector before charging or lighting a burner.

  Do a leak test at 300 pounds of nitrogen and let it sit an hour. — Haz la prueba de fugas con 300 libras de nitrógeno y déjala una hora.

  Also: prueba de hermeticidad (general) · prueba de fugas (MX)

• line set LAIN SET ▶ EN
  juego de líneas HWEH-goh deh LEE-neh-ahs ▶ ES

  The pair of copper refrigerant lines, one insulated, that connect the indoor and outdoor units.

  Run the line set through the wall and seal the penetration. — Pasa el juego de líneas por el muro y sella el agujero.

  Also: líneas de cobre (general) · tubería de cobre (MX)

• liquid line LIH-kwid LAIN ▶ EN
  línea de líquido LEE-neh-ah deh LEE-kee-doh ▶ ES

  The small bare copper line that carries warm high-pressure liquid refrigerant to the indoor coil.

  The liquid line runs warm; if it's cold you've got a restriction. — La línea de líquido va caliente; si está fría hay una restricción.

  Also: línea de alta (general) · la de alta (MX)

• makeup air MAYK-up AIR ▶ EN
  aire de reposición AI-reh deh reh-poh-see-SYOHN ▶ ES

  Outside air brought in to replace what the exhaust fans pull out, so the building doesn't go negative.

  The hood pulls 2,000 CFM, so the kitchen needs makeup air. — La campana jala 2,000 CFM, así que la cocina necesita aire de reposición.

  Also: aire de compensación (general) · aire de reposición (MX)

• manifold gauges MAN-ih-fold GAY-jes ▶ EN
  manómetros de servicio mah-NOH-meh-trohs deh ser-VEE-syoh ▶ ES Safety-critical

  The two-gauge set with hoses used to read system pressures; hook it up wrong and you get sprayed with refrigerant.

  Put the manifold gauges on and read the low side before you charge. — Conecta los manómetros de servicio y lee la baja antes de cargar.

  Also: juego de manómetros (general) · manómetros (MX)

• mastic MAS-tik ▶ EN
  mástique MAHS-tee-keh ▶ ES

  The thick gray paste brushed on duct joints to seal them airtight; it is the duct sealant inspectors want to see.

  Brush mastic on every joint, the inspector won't pass tape alone. — Unta mástique en cada junta, el inspector no pasa solo con cinta.

  Also: sellador de ductos (general) · mastique (MX)

• MERV rating MURV RAY-ting ▶ EN
  clasificación MERV klah-see-fee-kah-SYOHN MERV ▶ ES

  The number that says how fine a filter is; higher catches more dust but chokes airflow.

  Don't put a MERV 13 in that return, the unit can't pull through it. — No le pongas un MERV 13 a ese retorno, el equipo no puede jalar por ahí.

  Also: valor MERV (general)

• mini-split MIH-nee-split ▶ EN
  minisplit mee-nee-SPLEET ▶ ES

  A ductless system with a small wall head inside and a compact condenser outside.

  The garage gets a mini-split; there's no room for ductwork. — Al garaje le va un minisplit; no hay espacio para ductos.

  Also: equipo sin ductos (general) · minisplit (MX)

• offset OFF-set ▶ EN
  desviación des-vyah-SYOHN ▶ ES

  A double bend that jogs the duct sideways to get around an obstruction.

  Put an offset in the trunk to clear the beam. — Hazle una desviación al ducto principal para librar la viga.

  Also: offset (general) · quiebre (MX)

• package unit PAH-kij YOO-nit ▶ EN
  unidad paquete oo-nee-DAHD pah-KEH-teh ▶ ES

  A single cabinet that holds the coil, blower, compressor, and often the heat, all in one.

  It's a package unit, so the ducts come straight up through the curb. — Es unidad paquete, así que los ductos suben directo por la base.

  Also: equipo paquete (general) · paquete (MX)

• pilot light PAI-lut LAIT ▶ EN
  piloto pee-LOH-toh ▶ ES Safety-critical

  The small standing flame on older equipment that lights the main burners.

  Air out the cabinet before you relight the pilot light. — Ventila el gabinete antes de volver a encender el piloto.

  Also: llama piloto (general) · piloto (MX)

• plenum PLEH-num ▶ EN
  plenum PLEH-noom ▶ ES

  The boxed-in chamber right at the equipment where air gathers before it goes out to the ducts.

  Seal every seam on the supply plenum before you insulate it. — Sella todas las juntas del plenum de suministro antes de aislarlo.

  Also: cámara plena (general) · pleno (MX)

• recovery machine ree-KUH-ver-ee muh-SHEEN ▶ EN
  máquina de recuperación MAH-kee-nah deh reh-koo-peh-rah-SYOHN ▶ ES Safety-critical

  The machine that pumps refrigerant out of a system into a tank; venting instead is illegal.

  Hook up the recovery machine, we're not venting anything. — Conecta la máquina de recuperación, aquí no liberamos nada al aire.

  Also: recuperadora de refrigerante (general) · recuperadora (MX)

• refrigerant ree-FRIJ-er-ent ▶ EN
  refrigerante reh-free-heh-RAHN-teh ▶ ES Safety-critical

  The gas that carries heat through the system; it burns skin on contact and must never be vented to the air.

  Wear goggles and gloves any time you open a refrigerant line. — Ponte goggles y guantes cada vez que abras una línea de refrigerante.

  Also: gas refrigerante (general) · gas (MX)

• refrigerant charge ree-FRIJ-er-ent CHARJ ▶ EN
  carga de refrigerante KAR-gah deh reh-free-heh-RAHN-teh ▶ ES Safety-critical

  The exact amount of refrigerant the system needs, weighed in or set by superheat and subcooling.

  Weigh in the refrigerant charge off the nameplate, don't guess by beer-can cold. — Pesa la carga de refrigerante según la placa, no le adivines nomás por lo frío del tubo.

  Also: carga de gas (general)

• register REH-jis-ter ▶ EN
  rejilla reh-HEE-yah ▶ ES

  The louvered face at the wall, floor, or ceiling where the air comes out; a register has a damper, a plain grille does not.

  Don't set the registers until after the painters are done. — No pongas las rejillas hasta que terminen los pintores.

  Also: difusor de pared (general) · rejilla (MX)

• return air ree-TURN AIR ▶ EN
  aire de retorno AI-reh deh reh-TOR-noh ▶ ES

  The air the system pulls back out of the rooms to run through the filter and coil again.

  The unit is starving; we need more return air in the hallway. — Al equipo le falta aire; necesitamos más aire de retorno en el pasillo.

  Also: retorno (general)

• rooftop unit ROOF-top YOO-nit ▶ EN
  unidad de azotea oo-nee-DAHD deh ah-soh-TEH-ah ▶ ES

  A package unit set on a curb on the roof, common on commercial buildings; crews just call it an RTU.

  The crane sets the rooftop unit at seven, so be on the roof early. — La grúa monta la unidad de azotea a las siete, así que súbete al techo temprano.

  Also: unidad de techo (general) · RTU de azotea (MX)

• SEER SEER ▶ EN
  SEER seer ▶ ES

  The efficiency rating of a cooling system; the higher the number, the less power it burns.

  The customer bought the 16 SEER system, not the builder-grade one. — El cliente compró el sistema de 16 SEER, no el básico.

  Also: eficiencia SEER (general)

• sheet metal duct SHEET MEH-tal DUKT ▶ EN
  ducto de lámina DOOK-toh deh LAH-mee-nah ▶ ES

  Rigid duct fabricated from galvanized sheet metal, usually square or round.

  The trunk is sheet metal duct; only the branches are flex. — El tronco es ducto de lámina; nomás las ramas son flexibles.

  Also: ducto metálico (general) · ducto de lámina galvanizada (MX)

• sheet metal screw SHEET MEH-tal SKROO ▶ EN
  tornillo para lámina tor-NEE-yoh PAH-rah LAH-mee-nah ▶ ES

  The short self-tapping screw with a hex head used to fasten duct pieces together.

  Three sheet metal screws per joint, then mastic over them. — Tres tornillos para lámina por junta y luego mástique encima.

  Also: tornillo autorroscante (general) · pijas (MX)

• split system SPLIT SIS-tem ▶ EN
  sistema dividido sees-TEH-mah dee-vee-DEE-doh ▶ ES

  A setup with the coil and blower inside and the condenser outside, joined by a line set.

  This house has two split systems, one per floor. — Esta casa tiene dos sistemas divididos, uno por piso.

  Also: sistema split (general) · split (MX)

• static pressure STAH-tik PREH-sher ▶ EN
  presión estática preh-SYOHN es-TAH-tee-kah ▶ ES

  The resistance the duct system puts on the blower, measured in inches of water column.

  Total static pressure is point nine; the ducts are way undersized. — La presión estática total es de punto nueve; los ductos están muy chicos.

  Also: presión estática (general)

• suction line SUK-shun LAIN ▶ EN
  línea de succión LEE-neh-ah deh sook-SYOHN ▶ ES

  The big insulated copper line that carries cold low-pressure gas back to the compressor.

  The suction line should be cold and sweating, not warm. — La línea de succión debe estar fría y sudando, no tibia.

  Also: línea de baja (general) · la de baja (MX)

• supply air suh-PLAI AIR ▶ EN
  aire de suministro AI-reh deh soo-mee-NEES-troh ▶ ES

  The conditioned air the blower pushes out to the rooms.

  Check the supply air temperature at the register closest to the unit. — Checa la temperatura del aire de suministro en la rejilla más cercana al equipo.

  Also: aire de inyección (general) · aire de suministro (MX)

• takeoff TAYK-off ▶ EN
  salida del ducto sah-LEE-dah del DOOK-toh ▶ ES

  The collar fitting that taps a branch line off the main trunk.

  Cut in a six-inch takeoff here for the back bedroom. — Corta aquí una salida de seis pulgadas para la recámara de atrás.

  Also: derivación (general) · collarín (MX)

• thermostat THUR-moh-stat ▶ EN
  termostato ter-moh-STAH-toh ▶ ES

  The wall control that reads the room temperature and tells the equipment when to run.

  Mount the thermostat at 55 inches, away from the supply register. — Monta el termostato a 55 pulgadas, lejos de la rejilla de suministro.

  Also: termostato (general) · control de temperatura (MX)

• tonnage TUH-nij ▶ EN
  toneladas toh-neh-LAH-dahs ▶ ES

  The cooling capacity of a unit, where one ton equals 12,000 BTU per hour.

  What's the tonnage on that condenser? Read the model number. — ¿De cuántas toneladas es esa condensadora? Lee el número de modelo.

  Also: capacidad en toneladas (general) · toneladas de refrigeración (MX)

• transition tran-ZIH-shun ▶ EN
  transición trahn-see-SYOHN ▶ ES

  A tapered sheet metal piece that changes duct from one size or shape to another.

  We need a transition from the 20-by-8 down to a 14-inch round. — Necesitamos una transición del 20 por 8 a un redondo de 14 pulgadas.

  Also: reducción (general) · transición (MX)

• vacuum pump VAH-kyoom PUMP ▶ EN
  bomba de vacío BOHM-bah deh vah-SEE-oh ▶ ES

  The pump that pulls air and moisture out of the lines before refrigerant goes in.

  Pull it down to 500 microns with the vacuum pump and let it hold. — Jálale vacío a 500 micrones con la bomba de vacío y déjalo que aguante.

  Also: bomba de vacío (general)

• VAV box VEE-AY-VEE BOKS ▶ EN
  caja VAV KAH-hah veh-ah-veh ▶ ES

  A ceiling box with a motorized damper that varies how much air each zone gets.

  The VAV box for suite 200 is above the corridor ceiling. — La caja VAV de la suite 200 está arriba del plafón del pasillo.

  Also: caja de volumen variable (general)

• vibration isolator vai-BRAY-shun AI-soh-lay-tor ▶ EN
  aislador de vibración ais-lah-DOR deh vee-brah-SYOHN ▶ ES

  A rubber or spring mount under equipment that keeps its shaking out of the building.

  Set the unit on vibration isolators, the tenants below hear everything. — Monta el equipo sobre aisladores de vibración, los inquilinos de abajo oyen todo.

  Also: amortiguador de vibración (general) · taco de hule (MX)

• volume damper VOL-yoom DAM-per ▶ EN
  compuerta de volumen kohm-PWER-tah deh voh-LOO-men ▶ ES

  A hand-adjusted damper with a lever, used to balance how much air each branch gets.

  Put a volume damper at every takeoff so we can balance the house. — Pon una compuerta de volumen en cada salida para poder balancear la casa.

  Also: regulador de caudal (general)

• zone ZOHN ▶ EN
  zona SOH-nah ▶ ES

  An area of the building with its own thermostat and its own damper control.

  The upstairs is a separate zone, so it has its own stat. — El piso de arriba es una zona aparte, por eso tiene su propio termostato.

  Also: zona climatizada (general)

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