About Home Energy Diagnostics
Home Energy Diagnostics provides home energy audits and installs energy-efficiency improvements for homes. Its work includes efficiency plan design, air sealing, insulation, heating and air conditioning, water heaters, oil-to-gas conversions, and basement waterproofing. The business is based in Montclair, New Jersey, and its service locations include communities across northern New Jersey. For homeowners concerned about comfort or energy use, an audit and improvement plan can help organize decisions about the home’s envelope and equipment. Home Energy Diagnostics also offers project management related to the Home Performance with ENERGY STAR program and state rebates. Eligibility and program terms can vary, so confirm current requirements before planning work around incentives.
Business description
Home Energy Diagnostics provides home energy audits and installations of energy saving home improvements that lower energy bills and make your home more comfortable and safe. We are a certified contractor in the Home Performance with Energy Star program. We are certified by the Building Performance Institute to provide the highest level of energy-saving measures. Energy efficiency auditing can result in savings as high as 40%, saving you thousands of dollars. Upgrading your home's energy efficiency is cost effective. State and federal incentives allow you to receive state-of-the art energy saving measures such as air sealing, insulation and high-efficiency heating and air conditioning systems at a low cost.
Services
Listed services: Home improvement services, Waterproofing services, Heating and cooling services.
Explore the services below and confirm the scope of your project directly with the provider.
Home energy audits
Assessment services for homeowners seeking to identify energy-efficiency opportunities and plan potential improvements.
Efficiency planning and project management
Efficiency plan design and project management related to home energy improvement work and program rebates.
Air sealing and insulation
Installation of air sealing and insulation improvements as part of home efficiency work.
Heating and cooling
Heating and air conditioning services, including oil-to-gas conversions.
Water heaters
Water heater work is included among the efficiency improvements.
Basement waterproofing
Basement waterproofing is included among the home improvement services.
Start with the problem you want to solve
Before choosing an improvement, write down what you notice at home: rooms that feel too warm or cold, drafts, high energy use, or concerns about existing equipment. Note when each issue occurs and which parts of the house are affected. This is general preparation advice, not a promise about how an assessment will be conducted. Sharing these observations can help focus a conversation about an audit, efficiency plan, or possible equipment work.
Think about the home as a system
Air sealing and insulation address parts of the building envelope; heating, cooling, and water-heating equipment are other potential improvement areas. When comparing options, consider how each addresses the concern you have identified, rather than treating one upgrade as a substitute for every other need. Ask which parts of the home or equipment a proposed project would cover and what work would be outside its scope.
Check project and incentive details
Energy-efficiency projects may involve planning, installation, and potential program incentives. If you are considering rebates or financing, confirm the current program rules, eligible work, application timing, and any required documentation before committing to a project. Keep written estimates and program information together so you can compare the proposed work and its terms.
Common customer requests
Plan a home energy audit
I want an energy audit to understand where my home may be losing energy and what improvements could address it.
Explore air sealing and insulation
I’m considering insulation or air sealing and want to understand how those improvements fit into an efficiency plan.
Discuss heating and cooling
I’m weighing a heating or cooling system upgrade and want to discuss which type of improvement may suit my home.
Review equipment options
I’m interested in replacing a water heater or converting an oil-heated home to gas.
Ask about basement waterproofing
I’m looking into basement waterproofing as part of home improvement work.
Business details
Website: Visit Home Energy Diagnostics online
Services and specialties: Energy Audits, home energy audits, Efficiency Plan Design, Project Management through HPwES to secure state Rebates, Installation of Efficiency Improvements, Air Sealing and Insulation, Oil to gas Conversions, Heating and Air Conditioning, Water Heaters, Basement Waterproofing
Highlights: 21 years of trusted experience
Features: Eco-friendly practices or credentials
Payment options: Check, Financing Available
Additional business locations: 40 Carol Court. Glen Rock, New Jersey 07452; 179 Glenridge Avenue Montclair, New Jersey 07042; 1 Decamp Drive. Boston Township, New Jersey 07005
People associated with the business: Gail Testa, Tom Testa, Tom, Gail, Livingston
Business hours
- Friday
- 8:00 AM - 6:00 PM
- Monday
- Closed
- Saturday
- 8:00 AM - 6:00 PM
- Sunday
- 8:00 AM - 3:00 PM
- Thursday
- 8:00 AM - 6:00 PM
- Tuesday
- 8:00 AM - 6:00 PM
- Wednesday
- 8:00 AM - 6:00 PM
Service area
Service coverage includes Bloomfield, NJ, Fairfield, NJ, Boonton, NJ, Caldwell, NJ, Cedar Grove, NJ, Cliffside Park, NJ and 171 other communities. Coverage spans 246 ZIP codes; use the full coverage list below to check a specific location.
Service coverage includes 246 ZIP codes across 177 communities.
View all towns and ZIP codes
- Bloomfield, NJ07003
- Fairfield, NJ07004
- Boonton, NJ07005
- Caldwell, NJ07006, 07007
- Cedar Grove, NJ07009
- Cliffside Park, NJ07010
- Clifton, NJ07011, 07012, 07013, 07014, 07015
- Cranford, NJ07016
- East Orange, NJ07017, 07018, 07019
- Edgewater, NJ07020
- Essex Fells, NJ07021
- Fairview, NJ07022
- Fanwood, NJ07023
- Fort Lee, NJ07024
- Garfield, NJ07026
- Garwood, NJ07027
- Glen Ridge, NJ07028
- North Arlington, NJ07031
- Kearny, NJ07032, 07099
- Kenilworth, NJ07033
- Lake Hiawatha, NJ07034
- Lincoln Park, NJ07035
- Linden, NJ07036
- Livingston, NJ07039
- Maplewood, NJ07040
- Millburn, NJ07041
- Montclair, NJ07042, 07043
- Verona, NJ07044
- Montville, NJ07045
- Mountain Lakes, NJ07046
- Orange, NJ07050, 07051
- West Orange, NJ07052
- Parsippany, NJ07054
- Passaic, NJ07055
- Wallington, NJ07057
- Pine Brook, NJ07058
- Plainfield, NJ07060, 07061, 07062, 07063
- Rahway, NJ07065
- Clark, NJ07066
- Roseland, NJ07068
- Rutherford, NJ07070
- Lyndhurst, NJ07071
- Carlstadt, NJ07072
- East Rutherford, NJ07073
- Moonachie, NJ07074
- Wood Ridge, NJ07075
- Scotch Plains, NJ07076
- Short Hills, NJ07078
- South Orange, NJ07079
- Springfield, NJ07081
- Towaco, NJ07082
- Union, NJ07083
- Vauxhall, NJ07088
- Westfield, NJ07090, 07091
- Mountainside, NJ07092
- Newark, NJ07101, 07102, 07103, 07104, 07105, 07106, 07107, 07108, 07112, 07114, 07175, 07182, 07184, 07188, 07189, 07191, 07192, 07193, 07194, 07195, 07197, 07198, 07199
- Belleville, NJ07109
- Nutley, NJ07110
- Irvington, NJ07111
- Elizabeth, NJ07201, 07202, 07207, 07208
- Roselle, NJ07203
- Roselle Park, NJ07204
- Hillside, NJ07205
- Elizabethport, NJ07206
- Allendale, NJ07401
- Bloomingdale, NJ07403
- Butler, NJ07405
- Elmwood Park, NJ07407
- Fair Lawn, NJ07410
- Franklin Lakes, NJ07417
- Haskell, NJ07420
- Hewitt, NJ07421
- Ho Ho Kus, NJ07423
- Little Falls, NJ07424
- Mahwah, NJ07430, 07495, 07498
- Midland Park, NJ07432
- Newfoundland, NJ07435
- Oakland, NJ07436
- Oak Ridge, NJ07438
- Pequannock, NJ07440
- Pompton Lakes, NJ07442
- Pompton Plains, NJ07444
- Ramsey, NJ07446
- Ridgewood, NJ07450, 07451
- Glen Rock, NJ07452
- Ringwood, NJ07456
- Riverdale, NJ07457
- Saddle River, NJ07458
- Waldwick, NJ07463
- Wanaque, NJ07465
- Wayne, NJ07470, 07474, 07477
- West Milford, NJ07480
- Wyckoff, NJ07481
- Paterson, NJ07501, 07502, 07503, 07504, 07505, 07509, 07510, 07513, 07514, 07522, 07524, 07533, 07543, 07544
- Hawthorne, NJ07506, 07507
- Haledon, NJ07508, 07538
- Totowa, NJ07511, 07512
- Hackensack, NJ07601, 07602
- Bogota, NJ07603
- Hasbrouck Heights, NJ07604
- Leonia, NJ07605
- South Hackensack, NJ07606
- Maywood, NJ07607
- Teterboro, NJ07608, 07699
- Alpine, NJ07620
- Bergenfield, NJ07621
- Closter, NJ07624
- Cresskill, NJ07626
- Demarest, NJ07627
- Dumont, NJ07628
- Emerson, NJ07630
- Englewood, NJ07631
- Englewood Cliffs, NJ07632
- Harrington Park, NJ07640
- Haworth, NJ07641
- Hillsdale, NJ07642
- Little Ferry, NJ07643
- Lodi, NJ07644
- Montvale, NJ07645
- New Milford, NJ07646
- Northvale, NJ07647
- Norwood, NJ07648
- Oradell, NJ07649
- Palisades Park, NJ07650
- Paramus, NJ07652, 07653
- Park Ridge, NJ07656
- Ridgefield, NJ07657
- Ridgefield Park, NJ07660
- River Edge, NJ07661
- Rochelle Park, NJ07662
- Saddle Brook, NJ07663
- Teaneck, NJ07666
- Tenafly, NJ07670
- Westwood, NJ07675
- Township Of Washington, NJ07676
- Woodcliff Lake, NJ07677
- Dover, NJ07801, 07802
- Mine Hill, NJ07803
- Picatinny Arsenal, NJ07806
- Budd Lake, NJ07828
- Denville, NJ07834
- Flanders, NJ07836
- Hibernia, NJ07842
- Ironia, NJ07845
- Kenvil, NJ07847
- Lake Hopatcong, NJ07849
- Landing, NJ07850
- Ledgewood, NJ07852
- Long Valley, NJ07853
- Mount Arlington, NJ07856
- Netcong, NJ07857
- Rockaway, NJ07866
- Randolph, NJ07869
- Succasunna, NJ07876
- Mount Tabor, NJ07878
- Wharton, NJ07885
- Summit, NJ07901, 07902
- Berkeley Heights, NJ07922
- Brookside, NJ07926
- Cedar Knolls, NJ07927
- Chatham, NJ07928
- Chester, NJ07930
- Florham Park, NJ07932
- Gillette, NJ07933
- Green Village, NJ07935
- East Hanover, NJ07936
- Madison, NJ07940
- Mendham, NJ07945
- Millington, NJ07946
- Morris Plains, NJ07950
- Morristown, NJ07960, 07962, 07963
- Convent Station, NJ07961
- Mount Freedom, NJ07970
- New Providence, NJ07974
- New Vernon, NJ07976
- Stirling, NJ07980
- Whippany, NJ07981, 07983, 07999
Questions about Home Energy Diagnostics
What is a home energy audit?
A home energy audit is an assessment intended to identify opportunities to improve a home’s energy efficiency. Before arranging one, it can help to note which rooms feel uncomfortable, when drafts or temperature differences occur, and any concerns about heating or cooling equipment.
What is the difference between air sealing and insulation?
Air sealing addresses gaps that allow air to move through parts of a home, while insulation helps reduce heat transfer through building surfaces. The right approach depends on the home and the areas being improved, so consider noting draft locations and rooms that are difficult to keep comfortable.
What heating and cooling work is available?
The heating and cooling work includes heating and air conditioning systems, and the offered improvements also include water heaters. When comparing equipment options, gather information about your current system, fuel source, and the comfort or performance issues you want to address.
Does Home Energy Diagnostics handle oil-to-gas conversions?
Oil-to-gas conversions are among the services. Before considering a conversion, make a note of your current heating fuel and equipment, and ask what site-specific work and requirements would apply to your home.
Is basement waterproofing offered?
Basement waterproofing is included among the home improvement services. To discuss whether it fits your concern, note where water appears, when it occurs, and whether you have observed dampness or seepage in more than one area.
Can a home energy assessment help when buying a house?
A pre-purchase home energy assessment is available for an option for people buying a home. If you are evaluating a property, write down questions about comfort, insulation, heating, and cooling so those concerns can inform the assessment discussion.
Common industry questions
Last reviewed and updated November 09, 2026 by the Estimate.org editorial team.
