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NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

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Heating and air conditioning in Guilford, CT

14 heating and air conditioning in Guilford, CT; 578 within 30 miles. Every listing checked against the issuer's record, in the published order.

  1. Guilford Air Systems

    ActiveHeating, Piping & Cooling Limited Contractor (D1)

    Guilford, CT

    Ask it
    Proof for Guilford Air Systems
    License
    DCP HTG.0308150-D1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Limited Contractor (D1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0308150-D1 → Connecticut Consumer Protection search

  2. Havco Comfort Systems

    ActiveHeating, Piping & Cooling Limited Contractor (D1)+1

    Guilford, CT

    Ask it
    Proof for Havco Comfort Systems
    License
    DCP HTG.0398129-D1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Limited Contractor (D1); Sheet Metal Limited Contractor (SM1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0398129-D1 → Connecticut Consumer Protection search

  3. J J Sullivan Inc

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)+2

    Guilford, CT

    Ask it
    Proof for J J Sullivan Inc
    License
    DCP HIC.0582632
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Home Improvement Contractor; Heating, Piping & Cooling Unlimited Contractor (S1); Home Heating Fuel Dealer
    Expires
    Mar 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HIC.0582632 → Connecticut Consumer Protection search

  4. Jager LLC

    ActiveHeating, Piping & Cooling Limited Contractor (G1)

    Guilford, CT

    Ask it
    Proof for Jager LLC
    License
    DCP HTG.0308258-G1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Limited Contractor (G1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0308258-G1 → Connecticut Consumer Protection search

  5. K V Mechanical Contractors

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)+2

    Guilford, CT

    Ask it
    Proof for K V Mechanical Contractors
    License
    DCP PLM.0277432-P1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Plumbing & Piping Unlimited Contractor (P1); Heating, Piping & Cooling Unlimited Contractor (S1); Sheet Metal Limited Contractor (SM1)
    Expires
    Oct 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up PLM.0277432-P1 → Connecticut Consumer Protection search

  6. Mid River Heating and Cooling LLC

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)

    Guilford, CT

    Ask it
    Proof for Mid River Heating and Cooling LLC
    License
    DCP HTG.0405081-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0405081-S1 → Connecticut Consumer Protection search

  7. Oatley Mechanical Services Inc

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)+1

    Guilford, CT

    Ask it
    Proof for Oatley Mechanical Services Inc
    License
    DCP HTG.0403700-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1); Solar Thermal Contractor (STC1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0403700-S1 → Connecticut Consumer Protection search

  8. Old Goat HVAC Home Improvement LLC

    ActiveHome Improvement Contractor

    Guilford, CT

    Ask it
    Proof for Old Goat HVAC Home Improvement LLC
    License
    DCP HIC.0654317
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Home Improvement Contractor
    Expires
    Mar 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HIC.0654317 → Connecticut Consumer Protection search

  9. P.L Canestri Plumbing&Heating

    ActiveHeating, Piping & Cooling Limited Contractor (S5)+2

    Guilford, CT

    Ask it
    Proof for P.L Canestri Plumbing&Heating
    License
    DCP PLM.0203494-P1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Plumbing & Piping Unlimited Contractor (P1); Heating, Piping & Cooling Limited Contractor (S5); Fire Protection Unlimited Contractor (F1)
    Expires
    Oct 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up PLM.0203494-P1 → Connecticut Consumer Protection search

  10. Quality Mechanical Corporation

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)+4

    Guilford, CT

    Ask it
    Proof for Quality Mechanical Corporation
    License
    DCP HIC.0559960
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Home Improvement Contractor; Plumbing & Piping Unlimited Contractor (P1); Heating, Piping & Cooling Unlimited Contractor (S1); Sheet Metal Limited Contractor (SM1); Medical Gas & Vacuum Systems Contractor (MG1)
    Expires
    Mar 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HIC.0559960 → Connecticut Consumer Protection search

  11. R & B Refrigeration Inc

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)

    Guilford, CT

    Ask it
    Proof for R & B Refrigeration Inc
    License
    DCP HTG.0303315-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0303315-S1 → Connecticut Consumer Protection search

  12. Tsr Mechanical

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)+1

    Guilford, CT

    Ask it
    Proof for Tsr Mechanical
    License
    DCP HTG.0386431-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1); Sheet Metal Limited Contractor (SM1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0386431-S1 → Connecticut Consumer Protection search

  13. Winslow Plumbing and Mechanical

    ActiveHeating, Piping & Cooling Limited Contractor (S3)+1

    Guilford, CT

    Ask it
    Proof for Winslow Plumbing and Mechanical
    License
    DCP PLM.0204663-P1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Plumbing & Piping Unlimited Contractor (P1); Heating, Piping & Cooling Limited Contractor (S3)
    Expires
    Oct 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up PLM.0204663-P1 → Connecticut Consumer Protection search

  14. Yale University

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)

    Guilford, CT

    Ask it
    Proof for Yale University
    License
    DCP HTG.0302996-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Guilford, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0302996-S1 → Connecticut Consumer Protection search

  15. Ats Heating & Cooling

    ActivePrivate motor carrier

    North Branford, CT · 4 mi away

    CallAsk it
    Proof for Ats Heating & Cooling
    USDOT registration
    FMCSA 1047239
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    North Branford, CT · serves Connecticut
    Phone
    (203) 483-8212
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record

  16. Corporal Heating LLC

    ActivePrivate motor carrier

    North Branford, CT · 4 mi away

    CallAsk it
    Proof for Corporal Heating LLC
    USDOT registration
    FMCSA 1672734
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    North Branford, CT · serves Connecticut
    Phone
    (203) 488-8547
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record

  17. Dependable Heating & Cooling LLC

    ActivePrivate motor carrier

    North Branford, CT · 4 mi away

    CallAsk it
    Proof for Dependable Heating & Cooling LLC
    USDOT registration
    FMCSA 1710227
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    North Branford, CT · serves Connecticut
    Phone
    (203) 488-2061
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record

  18. Durso and Son Home Heating Oil LLC

    ActivePrivate motor carrier

    Madison, CT · 4 mi away

    CallAsk it
    Proof for Durso and Son Home Heating Oil LLC
    USDOT registration
    FMCSA 2571486
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    Madison, CT · serves Connecticut
    Phone
    (203) 800-6971
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record

  19. Hurricane Energy Heating and Cooling LLC

    ActivePrivate motor carrier

    North Branford, CT · 4 mi away

    CallAsk it
    Proof for Hurricane Energy Heating and Cooling LLC
    USDOT registration
    FMCSA 2800191
    Issuer
    FMCSA
    Status
    Active
    Class
    Private motor carrier
    Checked
    Oct 23, 2026
    Where
    North Branford, CT · serves Connecticut
    Phone
    (203) 208-4768
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → FMCSA record

  20. Comfort Specialists Heating & Cooling LLC

    ActiveHeating, Piping & Cooling Unlimited Contractor (S1)

    Madison, CT · 4 mi away

    Ask it
    Proof for Comfort Specialists Heating & Cooling LLC
    License
    DCP HTG.0389294-S1
    Issuer
    Connecticut Consumer Protection
    Status
    Active
    Class
    Heating, Piping & Cooling Unlimited Contractor (S1)
    Expires
    Aug 31, 2027
    Checked
    Oct 27, 2026
    Where
    Madison, CT · serves Connecticut
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Look up HTG.0389294-S1 → Connecticut Consumer Protection search

More cities in Connecticut

Stamford 34Bristol 26Milford 24Danbury 20Shelton 20Southington 19Enfield 18Norwalk 18Ellington 16Plainville 16Torrington 16Wallingford 16Glastonbury 14New Milford 14Stratford 14Branford 13

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