HVAC Help

WWW.HVACTECHGROUP.COM

Started by Admin

Replies: 0
Views: 10,805

March 13, 2010, 05:09:44 PM
by Admin

Disclaimer!

Started by Admin

Replies: 0
Views: 13,055

June 11, 2009, 09:05:22 PM
by Admin

Humidifier works but RH still low

Started by SRSmith

Replies: 2
Views: 19

January 20, 2025, 10:50:50 PM
by SRSmith

mini split wire

Started by double008

Replies: 2
Views: 9

January 20, 2025, 09:24:03 PM
by double008

Fantech ATMO ERV + Ecobee

Started by NomadEng

Replies: 2
Views: 11

January 20, 2025, 06:22:44 PM
by NomadEng

Furnace's fan is not working in "ON" position

Started by Vensi

Replies: 1
Views: 64

January 05, 2025, 10:19:23 AM
by Admin

Heater help, 120+volts when unplugged

Started by Danefoggy

Replies: 5
Views: 100

January 04, 2025, 09:17:54 PM
by Danefoggy

Cold Air Return - near ceiling

Started by HDVH2024

Replies: 2
Views: 172

December 23, 2024, 10:05:51 AM
by HDVH2024

Strobing lights on Lennox HRV

Started by TonyG

Replies: 0
Views: 82

December 21, 2024, 09:01:27 AM
by TonyG

Heat exchanger VanEE 90H

Started by Nnelg

Replies: 0
Views: 61

December 14, 2024, 05:19:15 PM
by Nnelg

Two stage furnace problem and question

Started by rx64397

Replies: 3
Views: 162

December 11, 2024, 09:11:19 PM
by JohnB1981

Heat pump and furnace issue after heat pump installation

Started by crwong77

Replies: 0
Views: 88

December 04, 2024, 10:10:34 PM
by crwong77

Connecting Venmar HRV to Lennox Communicating Furnace & Heat Pump

Started by jcanzo86

Replies: 2
Views: 570

November 29, 2024, 10:01:50 AM
by g-unit

Hook ERV to New Honeywell T10 Thermostat

Started by nailbird

Replies: 6
Views: 4,881

November 13, 2024, 12:20:23 PM
by laroucja

Old HRV interlock to new heat pump

Started by drk2004

Replies: 4
Views: 286

November 11, 2024, 10:00:24 AM
by drk2004

Manitowoc Ice Machine not making ice

Started by idoseadoo

Replies: 1
Views: 135

November 08, 2024, 08:19:59 PM
by InfinitudeMECH

Please help me understand

Started by Ridiculous

Replies: 25
Views: 638

November 06, 2024, 11:03:42 PM
by InfinitudeMECH

Condensation on Concealed Ducted Units – Possible Causes?

Started by HVAC_Newbieee

Replies: 0
Views: 112

November 01, 2024, 03:20:38 AM
by HVAC_Newbieee

Lifebreath 155Max Questions

Started by rathpr

Replies: 0
Views: 127

October 26, 2024, 03:01:57 PM
by rathpr

air exchanger

Started by art

Replies: 3
Views: 251

October 21, 2024, 06:32:54 AM
by Admin

PTAC Wind Noise

Started by spedprof

Replies: 1
Views: 207

October 17, 2024, 06:32:20 AM
by Porcupinepuffer

Help with tstat wiring at control panel

Started by spd7171

Replies: 0
Views: 162

October 14, 2024, 10:06:35 AM
by spd7171

Lifebreath RNC6-ES right motor's not starting.

Started by monzzzzz

Replies: 2
Views: 220

October 13, 2024, 12:10:16 PM
by monzzzzz

Inducer cycling non stop

Started by Tylergm

Replies: 2
Views: 236

September 29, 2024, 01:44:02 PM
by Porcupinepuffer

Can a furnace blower be wired to turn on a HRV, without using NO/NC terminals?

Started by needair

Replies: 10
Views: 12,569

September 18, 2024, 05:45:14 PM
by Admin

Ecobee premiun + HRV

Started by GECR21989

Replies: 1
Views: 363

September 17, 2024, 06:21:14 PM
by Admin

Soft Start Install Question

Started by rfc2005

Replies: 1
Views: 210

September 10, 2024, 03:21:48 PM
by Porcupinepuffer

Duct Design

Started by Killadoe

Replies: 2
Views: 302

September 01, 2024, 08:14:24 AM
by Killadoe

Patched boiler?

Started by lambmike

Replies: 0
Views: 149

August 31, 2024, 03:57:38 PM
by lambmike

Condenser Replacement Options

Started by bluebird

Replies: 1
Views: 210

August 16, 2024, 03:53:02 PM
by Porcupinepuffer

Question about Lifebreath HRV, interlock and balancing

Started by AndyM

Replies: 5
Views: 296

August 13, 2024, 05:09:33 AM
by Admin

Variable Fan running full speed

Started by CrashAlpha

Replies: 21
Views: 2,627

August 06, 2024, 12:35:52 PM
by CrashAlpha

New to HVAC need some guidance

Started by ckavert446

Replies: 6
Views: 366

August 01, 2024, 05:09:23 AM
by tenletters

Help needed !

Started by Phil

Replies: 7
Views: 411

July 31, 2024, 05:07:17 PM
by Phil

Question regarding my Venmar

Started by Bannerman

Replies: 1
Views: 288

July 29, 2024, 10:40:09 PM
by NoDIY

Ecobee thermostat problem

Started by paklinkselectric

Replies: 3
Views: 237

July 28, 2024, 02:13:06 AM
by paklinkselectric

New House, HVAC Nightmare

Started by nailbird

Replies: 0
Views: 220

July 21, 2024, 03:36:54 PM
by nailbird

Messed up install

Started by Tastygrass

Replies: 7
Views: 375

July 11, 2024, 06:05:02 PM
by Porcupinepuffer

Help With Troublesome System

Started by Greatwhitewing

Replies: 0
Views: 155

July 07, 2024, 07:51:04 AM
by Greatwhitewing

New to HVAC - need practical experience while working towards certifications

Started by Imran

Replies: 0
Views: 264

July 04, 2024, 09:08:03 AM
by Imran

What should the motor windings be on a Carrier ECM 1HP Motor model number number

Started by Cajunboy1959

Replies: 1
Views: 290

June 29, 2024, 10:34:13 AM
by Porcupinepuffer

AC help

Started by harley7316

Replies: 2
Views: 327

June 22, 2024, 10:22:08 PM
by Hgye

B149.1 OFC ITSM 17-009 Clarification of Appliance Vent Termination

Started by rkhan

Replies: 6
Views: 536

June 14, 2024, 06:08:16 AM
by Admin

Stacked Heat Pump condensate drain lines

Started by HVAC Engineer5

Replies: 0
Views: 216

June 12, 2024, 06:34:15 PM
by HVAC Engineer5

Normal Defrost vs. R2000 Defrost in Lifebreath HRVs

Started by anatolewilson

Replies: 0
Views: 247

June 04, 2024, 11:39:02 PM
by anatolewilson

Fujitsu split mini ac unit

Started by Ronskibby67

Replies: 5
Views: 307

May 31, 2024, 06:35:26 PM
by scarey8

Hi Velocity AC freezing problem

Started by bparizadehhvac

Replies: 2
Views: 322

May 20, 2024, 01:58:20 PM
by bparizadehhvac

Software for invoicing and book keeping

Started by mir

Replies: 3
Views: 4,932

May 18, 2024, 09:26:41 AM
by Hgye

Hayward H250FDN Indoor Venting Install

Started by Carbon8

Replies: 2
Views: 418

May 17, 2024, 08:46:01 AM
by Carbon8

Can using window units vs central air cause roof damage

Started by IIKnowNothingJonSnow

Replies: 0
Views: 200

May 13, 2024, 12:09:44 PM
by IIKnowNothingJonSnow

Replace 2009 Carrier Infinity System

Started by stephanhart

Replies: 3
Views: 520

May 09, 2024, 09:08:22 PM
by Byron

Ox Box by Trane Furnace

Started by jcalabrese

Replies: 1
Views: 367

May 09, 2024, 07:50:32 PM
by Admin

Day/Night Package unit 587ANZ048100AAAG

Started by joemech83

Replies: 0
Views: 355

April 26, 2024, 03:03:30 PM
by joemech83

Lifebreath 0% RH

Started by goldkicks000

Replies: 1
Views: 392

April 19, 2024, 01:40:40 PM
by Admin

Don park B vent sidewall termination

Started by Hvacpimp

Replies: 2
Views: 426

April 17, 2024, 12:24:14 PM
by Hvacpimp

Gas meter pressure tap

Started by 5cent

Replies: 13
Views: 886

April 15, 2024, 01:29:47 PM
by 5cent

Help

Started by DbSan

Replies: 2
Views: 379

April 14, 2024, 04:26:17 PM
by Admin

Smell coming from vents

Started by Salvaan

Replies: 3
Views: 375

April 12, 2024, 09:16:13 PM
by Salvaan

Lifebreath DCS300 No Power

Started by smokeythebandit

Replies: 3
Views: 386

April 08, 2024, 11:48:11 AM
by smokeythebandit

Lifebreath 195DCS Digital Control Unit

Started by PhilA

Replies: 5
Views: 417

April 05, 2024, 06:26:39 PM
by Admin

HVAC digital controller sign

Started by Alika

Replies: 2
Views: 347

April 03, 2024, 01:52:52 PM
by Admin

Rheem central AC keeps freezing up

Started by Lopez219

Replies: 1
Views: 363

March 28, 2024, 01:36:00 PM
by Sergroum

MUNCHKIN MC99 BOILER

Started by MER57

Replies: 0
Views: 253

March 26, 2024, 08:32:10 PM
by MER57

HVAC Carrier Heater intermittent problem

Started by Johnnybg00d

Replies: 6
Views: 531

March 25, 2024, 06:53:56 AM
by rmuntz

BOSCH Tankless T9800SE 160K BTU shows C1 & C2 error

Started by tester22

Replies: 3
Views: 431

March 12, 2024, 09:44:15 AM
by Sergroum

Help to disassemble

Started by welderwonder

Replies: 0
Views: 282

March 10, 2024, 05:47:05 PM
by welderwonder

HRV defrost motor

Started by Smck_6

Replies: 1
Views: 449

March 03, 2024, 04:03:03 PM
by Admin

Manual D TEL conundrum

Started by Blowhard

Replies: 0
Views: 330

March 01, 2024, 05:38:11 PM
by Blowhard

Need Source for Double Pole Single Throw Fan Relay 24 Volt 5 Amp

Started by vacman

Replies: 3
Views: 583

February 21, 2024, 08:15:50 AM
by vacman

Where can I put a humidifier on my furnace?

Started by Tailee

Replies: 4
Views: 626

February 18, 2024, 11:19:29 AM
by scarey8

Primary loop

Started by Elegance

Replies: 1
Views: 391

February 17, 2024, 08:49:12 AM
by scarey8

Interlocking furnace with HRV need explanations

Started by Alexhvac66

Replies: 9
Views: 18,615

February 14, 2024, 07:21:49 AM
by Sergroum

Cost for installing tankless water heater

Started by playatwork007

Replies: 4
Views: 408

February 13, 2024, 04:06:46 PM
by Porcupinepuffer

Lifebreath 155 Max High speed issue

Started by marcgap

Replies: 1
Views: 409

February 12, 2024, 08:15:24 PM
by Admin

NTI ignition issue.

Started by scarey8

Replies: 2
Views: 452

February 10, 2024, 04:06:43 PM
by scarey8

Lennox CBX32MV-060 Fan Running At Full Speed During Heating Cycles

Started by super dave T

Replies: 6
Views: 729

February 04, 2024, 05:42:14 PM
by Admin

Blower Motor not coming on. Only 3 volts to speed wire. Relay faulty?

Started by vacman

Replies: 1
Views: 432

February 04, 2024, 10:07:53 AM
by vacman

2 Stage Furnace Intermittent Problem Solved

Started by Mark3577

Replies: 0
Views: 397

February 02, 2024, 07:28:08 PM
by Mark3577

Intermittent shut down before ignition. Aire-Flo #AF80MPA075BSB

Started by Mac63

Replies: 3
Views: 490

February 02, 2024, 06:51:44 PM
by Mark3577

VanEE exchanger duct install

Started by Tailee

Replies: 3
Views: 474

February 02, 2024, 07:32:37 AM
by Admin

Think I fried my control board?

Started by Catch22

Replies: 2
Views: 442

January 30, 2024, 07:41:00 PM
by Catch22

Unusual Cost Estimate for furnace part - feedback appreciated

Started by Mark3577

Replies: 3
Views: 386

January 30, 2024, 01:22:45 PM
by Mark3577

Premature Burner Shut-Off - Rheem Gas Furnace RGTA-07EMAES

Started by All2kool

Replies: 1
Views: 453

January 27, 2024, 08:28:20 AM
by Admin

Fast Stats. Hot! Hot! Hot!

Started by Sergroum

Replies: 0
Views: 299

January 24, 2024, 05:00:58 PM
by Sergroum

VanEE 90 H motor not spinning

Started by Tailee

Replies: 0
Views: 329

January 24, 2024, 11:46:43 AM
by Tailee

Humidity level will not increase

Started by Agh089

Replies: 8
Views: 794

January 24, 2024, 06:57:14 AM
by Admin

Undersized Furnace?

Started by Gears

Replies: 7
Views: 730

January 23, 2024, 08:50:53 AM
by Gears

HRV1-150 Circuit Board

Started by gill_mn

Replies: 1
Views: 336

January 20, 2024, 06:04:14 PM
by Admin

VFD VOLTAGE AND MOTOR VOLTAGE

Started by miko

Replies: 0
Views: 346

January 19, 2024, 03:06:37 AM
by miko

Wiring a inverter generator back up pigtail to a Trane XE 90 furnace

Started by Falcon195

Replies: 0
Views: 477

January 18, 2024, 11:29:15 PM
by Falcon195

furnace fan runs whenever it wants to

Started by Rob

Replies: 3
Views: 427

January 17, 2024, 04:01:13 PM
by Admin

Carrier part number help

Started by Brahaum

Replies: 2
Views: 328

January 16, 2024, 09:36:38 PM
by Brahaum

Help! Flame detector

Started by Mickyfinn

Replies: 1
Views: 390

January 13, 2024, 09:34:00 AM
by Mickyfinn

HVAC intermittent smell from ceiling vents - How to fix??

Started by David42

Replies: 0
Views: 414

January 07, 2024, 09:45:14 AM
by David42

Why is like this Inside Attic having lot of Moisturization Water on Top of Insul

Started by tester22

Replies: 1
Views: 416

January 03, 2024, 08:03:26 PM
by Porcupinepuffer

Unit Heater (NG Garage Heater) Placement Issue

Started by abeyersdorff

Replies: 3
Views: 746

January 03, 2024, 09:58:45 AM
by abeyersdorff

Furnace code 837

Started by Naive customer

Replies: 2
Views: 384

December 27, 2023, 04:18:33 PM
by samihabib

Rheem gas furnace false starts

Started by Buzz

Replies: 1
Views: 547

December 21, 2023, 05:29:28 AM
by Porcupinepuffer

Heat pump not heating

Started by Hvacneedy

Replies: 4
Views: 506

December 19, 2023, 06:47:47 PM
by Hvacneedy

Ducted Airconditioning and pipe work sizing

Started by H1988

Replies: 0
Views: 371

December 19, 2023, 10:50:02 AM
by H1988

To reduce my Water Bill, can I adjust Shut Off Valve under Kitchen & Sink faucet

Started by tester22

Replies: 1
Views: 392

December 16, 2023, 09:07:29 AM
by Porcupinepuffer

Troubleshooting

Started by hvactech23

Replies: 4
Views: 476

December 14, 2023, 11:57:14 AM
by rmuntz

Is it ok to replace this ZURN WILKINS ZW1017XL into new little different ZURN WI

Started by tester22

Replies: 7
Views: 789

December 12, 2023, 08:27:30 AM
by tester22

Blower Motor Stalls Every Cycle

Started by ACME_Mike

Replies: 8
Views: 611

December 10, 2023, 05:41:46 PM
by ACME_Mike

mercury flame sensor replacement

Started by alfred67

Replies: 25
Views: 22,151

December 10, 2023, 12:09:00 PM
by jherman

Indoor unit not blowing hot air

Started by filix2455

Replies: 0
Views: 408

December 09, 2023, 08:04:58 AM
by filix2455

Lennox error E124 for zone t-stat

Started by Montecore

Replies: 0
Views: 373

December 05, 2023, 11:39:07 AM
by Montecore

Metal Hood Clearance Over Gas Range

Started by lisadepaolo@gmail.com

Replies: 5
Views: 640

December 03, 2023, 03:46:51 PM
by Admin

RUUD Achiever Question

Started by JMeik

Replies: 1
Views: 376

December 03, 2023, 10:05:44 AM
by Hgye

Inverter Duty Hyper Heat

Started by viking

Replies: 0
Views: 403

December 02, 2023, 09:38:06 PM
by viking

Furnace board relay clicking ON OFF ON (believe relay for main large blower fan)

Started by mhvac

Replies: 1
Views: 399

November 30, 2023, 10:56:03 AM
by Porcupinepuffer

Trane Furnace Shuts off / Loud Clicking on Restart - Control Board?

Started by steelworx

Replies: 1
Views: 496

November 29, 2023, 12:53:16 PM
by Porcupinepuffer

What does it mean if a trane clean effects lights aren't coming on?

Started by Kosmo23

Replies: 3
Views: 458

November 28, 2023, 08:29:27 PM
by Admin

Furnace fan problems!!!!

Started by matskot

Replies: 1
Views: 400

November 24, 2023, 01:42:59 PM
by samihabib

Oil burner problem

Started by Mikemrq

Replies: 2
Views: 719

November 23, 2023, 08:20:48 AM
by rmuntz

Trane Burners Fail To Stay Lit

Started by krawfo

Replies: 3
Views: 511

November 21, 2023, 06:48:52 PM
by Porcupinepuffer

Furnace randomly shuts off

Started by Agyuker

Replies: 2
Views: 452

November 13, 2023, 06:11:20 PM
by Admin

Designation/certificate to do commercial hvac drawings???

Started by wantboost

Replies: 2
Views: 669

November 09, 2023, 08:13:32 AM
by wantboost

Anyone do Hvac drawing for new builds ??

Started by wantboost

Replies: 13
Views: 1,944

November 08, 2023, 08:40:36 PM
by wantboost

Adding returns in rooms

Started by hello73

Replies: 3
Views: 673

November 06, 2023, 08:30:42 PM
by Hgye

Is this possible?? HVAC professionals opinion needed

Started by martin1234

Replies: 0
Views: 573

November 04, 2023, 04:07:41 PM
by martin1234

Help with an Open High Limit on Goodman furnace

Started by ferox1

Replies: 3
Views: 804

November 03, 2023, 06:04:30 PM
by Admin

Trane XV90 second stage doesn't always work

Started by Mark3577

Replies: 2
Views: 494

November 02, 2023, 10:30:14 AM
by Mark3577

Ignitor not working - Control board? Lennox G61mpv

Started by Bigrockk

Replies: 7
Views: 1,191

October 30, 2023, 04:37:25 PM
by Bigrockk

Flame Rectifier Older Pilot Furnace

Started by Bob G

Replies: 4
Views: 522

October 27, 2023, 06:36:02 PM
by Admin

Brand new Ruud u962v07

Started by Jpiazza

Replies: 2
Views: 542

October 21, 2023, 09:57:51 AM
by Hgye

Digital panel (dxpl02) not relaying instructions/signal to Lifebreath dcs 300

Started by Nick L

Replies: 12
Views: 1,352

October 19, 2023, 08:44:45 PM
by Admin

HVAC Apartment Insulation Replacement Needed?

Started by wella

Replies: 4
Views: 727

October 17, 2023, 12:11:09 PM
by wella

Is it the ECM motor or the control board of the furnace that might be failing?

Started by user2023

Replies: 2
Views: 578

October 07, 2023, 11:55:48 PM
by user2023

Adding an HRV Controller

Started by YYC_duel_fuel

Replies: 2
Views: 689

October 05, 2023, 09:20:16 AM
by YYC_duel_fuel

"slow continuous" mode on ERV

Started by Eric808

Replies: 2
Views: 433

October 05, 2023, 08:01:31 AM
by Eric808

Calling for heat but no blower

Started by always something

Replies: 7
Views: 907

October 02, 2023, 08:19:18 PM
by always something

Bryant 315AA furnace the blower is always on, no flame, 33 code

Started by alex4321

Replies: 2
Views: 490

October 02, 2023, 06:08:55 PM
by Admin

AC Breaker tripping

Started by Syncmaster

Replies: 13
Views: 974

October 02, 2023, 05:50:45 PM
by Admin

I've been told installing a programmable Wi-Fi thermostat for a heat pump is...

Started by gfr92y

Replies: 5
Views: 724

September 22, 2023, 08:54:52 PM
by Admin

Heat pump thermostat recommendation

Started by Hgye

Replies: 3
Views: 728

September 21, 2023, 07:32:50 PM
by samihabib

Ecobee wiring issue

Started by deep

Replies: 1
Views: 529

September 17, 2023, 09:25:07 AM
by Admin

new to HVAC work

Started by taiwanluthiers

Replies: 5
Views: 815

September 11, 2023, 04:21:00 AM
by tenletters

313 A license Study material

Started by kristi8640

Replies: 1
Views: 587

September 11, 2023, 04:18:26 AM
by tenletters

New central AC, condensers and SEER2 ratings vary on competing quotes

Started by evbuyer18

Replies: 0
Views: 515

September 09, 2023, 09:54:27 AM
by evbuyer18

Self installed Pasapair 18K BTU split mini

Started by EricJC

Replies: 1
Views: 869

September 08, 2023, 05:09:09 PM
by Porcupinepuffer

Rooftop Pro-Lift Shenanagins

Started by Sergroum

Replies: 0
Views: 679

September 07, 2023, 11:01:59 AM
by Sergroum

308R help

Started by Tinbanger22

Replies: 0
Views: 489

September 07, 2023, 07:17:06 AM
by Tinbanger22

carrier infinity help needed, tech's seem to be guessing on issue

Started by rgs80074

Replies: 2
Views: 611

September 06, 2023, 03:46:34 PM
by rgs80074

$5500 Compressor or something else

Started by Dradran

Replies: 5
Views: 687

September 03, 2023, 06:26:59 AM
by tenletters

Intermittent cooling

Started by Rbs

Replies: 3
Views: 575

September 01, 2023, 10:50:49 AM
by taiwanluthiers

Invita Tekmar Tstat Alternatives

Started by Sergroum

Replies: 0
Views: 683

September 01, 2023, 10:14:26 AM
by Sergroum

Experience with either the 6700 or 6600 series Napoleon

Started by melaniewalker

Replies: 3
Views: 722

August 25, 2023, 05:28:26 PM
by Sergroum

Hvac

Started by Goldy40211

Replies: 2
Views: 562

August 25, 2023, 04:44:59 PM
by rmuntz

B/2 wire? Wut?

Started by Sergroum

Replies: 1
Views: 475

August 22, 2023, 05:09:45 PM
by Admin

Ecobee 5 + Lifebreath HRV installation help

Started by econewbee

Replies: 13
Views: 18,114

August 18, 2023, 07:57:52 PM
by Admin

Looking for Advice: Heat pump number of heads and location

Started by KVanier

Replies: 0
Views: 481

August 17, 2023, 12:54:28 PM
by KVanier

High pressure at 425 psi

Started by Ogontech

Replies: 2
Views: 518

August 12, 2023, 05:51:50 PM
by Porcupinepuffer

Float switch in a positive pressure air handler Trane

Started by Sintil8

Replies: 1
Views: 510

August 11, 2023, 12:40:20 PM
by Admin

Lifebreath 267max won’t run right

Started by Syno324

Replies: 0
Views: 658

August 01, 2023, 06:27:37 PM
by Syno324

Type of AC for small house

Started by Abandonedunit

Replies: 4
Views: 764

July 27, 2023, 08:52:42 AM
by Sergroum

Mini-Split HVAC System

Started by a2743

Replies: 4
Views: 612

July 24, 2023, 03:49:48 PM
by Admin

Normal for a compressor to get hot immediately?

Started by bigjoncoop

Replies: 1
Views: 496

July 24, 2023, 11:22:29 AM
by Sergroum

Las Vegas, Amana Split System (qty 2), stopped but now working

Started by bird95134

Replies: 3
Views: 724

July 24, 2023, 10:16:14 AM
by bird95134

The Nest Thermostat – where does the “C” wire go?

Started by Dynamo2000

Replies: 0
Views: 494

July 22, 2023, 09:14:18 PM
by Dynamo2000

High Coil Temp for Trane 1.5 Ton

Started by cotsy

Replies: 2
Views: 558

July 22, 2023, 08:44:04 AM
by cotsy

Fan coil humidity

Started by paprglider

Replies: 0
Views: 794

July 18, 2023, 03:15:46 PM
by paprglider

Serial number Friedrich AC

Started by Canadiancold

Replies: 0
Views: 516

July 10, 2023, 12:05:11 PM
by Canadiancold

carrier infinity fe4anf003 communication error 44/41 need help

Started by rgs80074

Replies: 0
Views: 2,020

July 09, 2023, 09:51:06 AM
by rgs80074

3 techs = 3 different answers.

Started by MrLakeShow

Replies: 5
Views: 750

July 06, 2023, 02:39:51 PM
by NoDIY

Help. So confused with A/C furnace and hot water tank.

Started by Kerbear

Replies: 1
Views: 497

July 06, 2023, 01:06:15 PM
by Admin

High velocity vs low velocity

Started by A-Rex

Replies: 2
Views: 610

July 05, 2023, 09:36:01 PM
by Hgye

Need Help - Obsolete Honeywell Thermostat

Started by Diamonddave952

Replies: 1
Views: 558

July 03, 2023, 08:45:23 AM
by Porcupinepuffer

ecobee with HRV

Started by boramos

Replies: 7
Views: 870

July 02, 2023, 11:45:55 PM
by Admin

Air stratification (on purpose)?

Started by Frstuttit

Replies: 0
Views: 527

July 02, 2023, 10:54:11 PM
by Frstuttit

Help needed! Local HVAC techs don’t even know what’s going on.

Started by Dsanders12

Replies: 2
Views: 753

June 28, 2023, 08:30:53 PM
by Dsanders12

Musty Smell coming through vents

Started by Bramski

Replies: 3
Views: 786

June 24, 2023, 06:37:48 AM
by Admin

Replacing 80's Thermostat 7.5v?

Started by rovafa2002

Replies: 3
Views: 599

June 22, 2023, 11:01:57 AM
by rovafa2002

ERV with whole house dehumidifier a good idea for Ontario?

Started by Eric808

Replies: 4
Views: 1,012

June 18, 2023, 06:16:01 AM
by Eric808

Question about my unit

Started by Smolsbee

Replies: 1
Views: 517

June 15, 2023, 02:36:16 PM
by Hgye

HELPP! HVAC duct motor spins and clicks!

Started by Mrdduma

Replies: 0
Views: 505

June 14, 2023, 06:31:58 PM
by Mrdduma

HVAC cheat sheets?

Started by Steve.Keelan

Replies: 2
Views: 1,114

June 07, 2023, 04:31:08 AM
by tenletters

Drastic HVAC performance reduction

Started by Theone964

Replies: 0
Views: 528

June 06, 2023, 02:29:23 PM
by Theone964

Poor HVAC Ventilation In Bedroom

Started by toicy4ya

Replies: 1
Views: 518

June 05, 2023, 07:05:46 PM
by Admin

22 Year Old Goodman Evap Coil

Started by robmaxfli

Replies: 5
Views: 869

June 04, 2023, 12:26:38 PM
by Admin

Mr. Cool P1 Code

Started by Hesslerk

Replies: 1
Views: 488

June 04, 2023, 09:26:13 AM
by Admin

Is it possible to have a two wire smart thermostat for central heating/cooling?

Started by PurpleKoolAid

Replies: 6
Views: 1,285

June 01, 2023, 10:53:34 AM
by PurpleKoolAid

Carrier Heat Pump Wiring Question.

Started by dastx435

Replies: 14
Views: 1,759

May 29, 2023, 03:06:40 AM
by Admin

313d exam study /practice material

Started by Batala2023

Replies: 1
Views: 687

May 26, 2023, 08:12:50 PM
by Admin

R422D superheat... Can't seem to get my unit to run efficiently

Started by DTinNC

Replies: 6
Views: 949

May 22, 2023, 11:52:37 PM
by DTinNC

Need help with HVAC unit (inside home) weird problem

Started by himybro

Replies: 5
Views: 852

May 17, 2023, 10:58:12 PM
by DTinNC

Old rheem thermostat change out

Started by tiny tim

Replies: 2
Views: 547

May 15, 2023, 03:47:24 PM
by tiny tim

Defrost damper function problem with Lennox HRV

Started by The Lion

Replies: 15
Views: 3,211

May 13, 2023, 01:07:07 PM
by The Lion

Lifebreath 155max

Started by nick22

Replies: 3
Views: 674

May 10, 2023, 06:32:45 PM
by Admin

Ecobee Smart Thermostat + HRV Ventilation System Installation Help!

Started by mythx1

Replies: 1
Views: 1,015

May 07, 2023, 09:22:03 AM
by Admin

Calculating meter capacity

Started by Andronius

Replies: 1
Views: 603

May 03, 2023, 09:20:16 PM
by Attavior

Looking for Help regarding relites of gas appliances

Started by Moen17

Replies: 2
Views: 609

May 03, 2023, 07:19:25 PM
by Moen17

Replacement for Trane XL824

Started by Robert 1151

Replies: 1
Views: 542

April 25, 2023, 06:22:36 PM
by Admin

Red Zone DVS 600 Air Handler Furnace connect with Tankless Hot Ware Heater havin

Started by tester22

Replies: 15
Views: 1,502

April 22, 2023, 07:47:50 PM
by tester22

Looking for help with heat pump

Started by vredfreak

Replies: 4
Views: 684

April 19, 2023, 12:59:12 PM
by vredfreak

Please help to identfy old condenser

Started by copyman

Replies: 3
Views: 797

April 18, 2023, 01:58:33 PM
by copyman

What type of duct work is this ??

Started by wantboost

Replies: 2
Views: 590

April 18, 2023, 06:39:53 AM
by Admin

Help! Getting Quotes for New Heat Pump

Started by AZflower23

Replies: 2
Views: 633

April 14, 2023, 06:43:16 AM
by Sergroum

313D Exams Private Forum

Started by divyanshumann

Replies: 2
Views: 1,095

April 12, 2023, 05:40:32 PM
by Sergroum

308r/a

Started by Sergroum

Replies: 2
Views: 865

April 10, 2023, 01:05:39 PM
by Sergroum