Research by DoINeedAPermit Research Team · Updated May 2026
The Short Answer
Most HVAC projects in Greer require a permit from the City of Greer Building Department — including new system installations, replacements, and significant repairs. Some minor maintenance and service calls don't require permits, but the line is strict and easily crossed.
Greer enforces the 2015 International Energy Conservation Code (IECC) and 2015 International Mechanical Code (IMC) with South Carolina amendments, which means nearly all refrigerant-bearing work, ductwork modification, and new equipment installation must be inspected by the city. Unlike some smaller SC jurisdictions that grandfather older systems or allow service-only exemptions broadly, Greer applies code uniformly across residential and light commercial properties — a distinction that matters if you're in an unincorporated area nearby (Spartanburg County's rules differ). The city uses an online permit portal for filing and accepts both contractor and owner-builder applications (SC state law allows owner-builders for single-family residential under SC Code § 40-11-360). Plan-review turnaround is typically 3-5 business days for standard replacements, but complex jobs or those triggering energy-code compliance reviews run longer. The permit fee is roughly $150–$300 depending on system tonnage and scope — Greer charges a flat fee plus a small percentage of the declared project cost, so an $8,000 heat pump replacement might run $200–$250 in permit fees alone.

What happens if you skip the permit (and you needed one)

Greer HVAC permits — the key details

Greer, a city of roughly 30,000 in the Spartanburg/Greenville border region, sits in the upstate Piedmont and coastal-influence zone of South Carolina. The building code is the 2015 IMC and 2015 IECC, adopted by reference in the city's ordinance. Because Greer is incorporated and Spartanburg County extends around it, dual-jurisdiction questions arise: projects inside city limits go to City of Greer Building Department; unincorporated Spartanburg County properties go to County. This matters because Spartanburg County's interpretation of service vs. replacement exemptions is slightly more lenient than Greer's. In Greer proper, the rule is simple: any work that involves adding refrigerant charge, replacing a compressor or evaporator coil, installing new ductwork, or modifying the supply/return air system requires a permit and inspection. The code citation is IMC Chapter 6 (Mechanical Systems) and IMC Chapter 15 (Duct Systems), enforced by the city's mechanical inspector during plan review and final walk-through. Greer has no exemption for 'like-for-like' replacements in the way some states do — if you swap an old 3-ton unit for a new 3-ton unit in the same location, that is still a permitted replacement under IMC 1502 (Duct Insulation). The city's online portal allows you to upload plans, mechanical load calculations, and equipment specs; the inspector reviews and either approves, approves with conditions, or requests revisions (rare for straightforward replacements, but common for oversized systems or unusual configurations).

Exemptions exist, but they are narrow and often misunderstood. Routine maintenance — filter changes, refrigerant top-ups (without opening the system), blower-motor lubrication — does not require a permit and does not trigger inspection. However, the moment you open the sealed system or replace a major component (compressor, condenser coil, evaporator), the threshold shifts. The SC Refrigeration License Law (SC Code § 40-11-810) also requires that anyone performing refrigerant work hold a valid EPA Section 608 certification; homeowners and unlicensed handymen cannot legally perform even maintenance. This is a state-level rule but Greer enforces it during final inspection, so a homeowner cannot pull a permit and then hire an unlicensed neighbor to do the work. If the inspector finds that an uncertified person worked on the system, the permit is rejected and the work is ordered to be redone by a licensed contractor. Owner-builders are allowed to pull permits for single-family residential projects under SC § 40-11-360, but they must perform the work themselves and must hold any required state licenses (like EPA 608 for refrigerant); hiring labor to do licensed work disqualifies the owner-builder exemption.

Greer's permit timeline is typically 5-10 business days from submission to final inspection appointment. The process: (1) submit permit application with equipment specs, tonnage, and estimated cost via the online portal or in-person at city hall (100 W. Melrose Avenue, across from the Greer Community Center); (2) Building Department reviews for completeness and routes to mechanical inspector for code compliance; (3) inspector approves or requests revisions (usually within 3-5 days for standard replacements); (4) once approved, work can begin; (5) after installation, you schedule final inspection (typically 1-3 days' notice required); (6) inspector walks through, verifies equipment nameplate data, checks ductwork sealing and insulation compliance, confirms refrigerant charge, and signs off. If the system is oversized (e.g., installing a 4-ton unit where a 2.5-ton load analysis says 3 tons would do), the inspector may require a Manual J load calculation (ASHRAE standard) to justify it — this is energy-code compliance per IECC 11401.2 and adds 1-2 days and $400–$800 in engineering cost. The permit fee itself is $150–$300; if revisions are requested, there is no additional permit fee, but delays add up.

Climate and soil context matter for HVAC siting in Greer. The area is 12-inch frost depth and mixed Piedmont clay and sandy soils (not pluff mud — that is coastal marshland near Charleston/Beaufort, not Greer). This means outdoor condensing units must be set on a stable pad (concrete, crushed stone, or rubber mat) to prevent settling and vibration — the IMC requires 4-6 inches of clearance on all sides and 7 feet above grade in typical residential lots. Greer's subtropical summer humidity (peak season is June-August, 85-95°F, 60-75% RH) means the mechanical inspector pays close attention to condensate drainage and evaporator coil insulation to prevent mold and moisture damage; any condensate line not sloped at 1/8 inch per foot will be flagged. The 3A climate zone (moderate heating, significant cooling) also triggers IECC efficiency minimums: residential air conditioners must be minimum 14 SEER2 (or 13 SEER under the old scale), and heat pumps must be minimum 8.5 HSPF2 for heating. If you are replacing a system and the new equipment doesn't meet these minimums, the permit will be denied. This rule is statewide, but Greer's inspector is strict about it — bringing in an older or cheaper unit will not pass.

After final inspection passes, the city issues a Certificate of Completion, which you keep with your home records. This document is critical for: (1) insurance claims if the system fails or causes damage; (2) property sale disclosure and title company review; (3) refinance or home-equity lender requirements; (4) future permit applications (the inspector can reference prior work). If you lose the Certificate, the city can reissue it upon request (typically $25–$50). One common mistake: homeowners assume that because a contractor 'guarantees' the work, they don't need a permit. Contractor warranty is a separate matter and does not substitute for code compliance or city inspection. A contractor who skips the permit to save time and fee is violating SC law and exposing both parties to liability. Greer Building Department has enforcement authority to issue stop-work orders, assess fines, and refer violations to the SC Department of Labor, Licensing and Regulation for contractor-license complaints.

Three Greer hvac scenarios

Scenario A
Straight replacement of a 15-year-old 3-ton central AC unit with a new 14 SEER2 model, same outdoor pad, existing ductwork, single-story home in Greer city limits
This is the most common HVAC permit trigger in Greer. Even though you are replacing like-for-like in tonnage and location, the 2015 IMC Section 1502 requires that any new refrigerant-bearing equipment be inspected for proper installation, refrigerant charge, electrical disconnect compliance, and ductwork integrity. The permit process is straightforward: submit the equipment nameplate data (model number, serial number, tonnage, SEER2 rating) and a rough site diagram showing the outdoor unit location and indoor air handler location. Greer's permit fee is typically $175–$225 for a residential replacement of this scope. The inspector will visit before work begins to verify the existing pad condition and ductwork accessibility, then return after installation to check nameplate data, verify the refrigerant charge matches the equipment specification (within +/- 3 ounces), confirm that all electrical connections are code-compliant (dedicated 240V circuit with appropriate breaker, proper grounding), and test airflow and temperature rise across the furnace or air handler. If the existing ductwork has leaks or is heavily insulated with old fiberglass (pre-2000 standard), the inspector may require additional sealing or insulation upgrades under IECC 11402.3 — this can add $1,000–$3,000 to the job. Timeline: permit application to final inspection typically 7-10 business days. Total out-of-pocket: $8,000–$12,000 (equipment + labor + permit + any duct work) plus permit fees of $200–$250. The Certificate of Completion is issued on-site or via email within 1 business day.
Permit required | $175–$225 permit fee | Manual J load calc not required (like-for-like) | EPA 608 certification required for tech | Final inspection included in permit | 7-10 day timeline
Scenario B
Installation of a new 5-ton heat pump system to replace a 20-year-old gas furnace + AC split in a remodeled 2,000 sq ft ranch home, with new 6-inch return ductwork run through a conditioned attic space
This scenario introduces complexity because new ductwork and a system size increase trigger energy-code compliance and manual load calculation review. Installing a 5-ton heat pump where the old system was 4 tons demands a Manual J ASHRAE load calculation to justify the tonnage — the inspector will not approve the permit without it. This calculation costs $400–$800 and requires an HVAC designer or engineer to analyze the home's insulation, window U-values, air infiltration, and solar gain. Greer's Building Department has a standard checklist for heat pump installations: (1) Manual J sizing; (2) ductwork design per Manual D (ASHRAE) showing all return and supply trunk dimensions, sealing method, and insulation R-value (minimum R-8 for ductwork in unconditioned space, R-6 in conditioned space like your attic); (3) electrical load analysis (5-ton heat pumps often require 40-60A service upgrade, which may trigger electrical permit); (4) refrigerant line sizing per EPA and IMC guidelines. The new return ductwork run through the attic is a particular focus because Greer is humid in summer and inspectors scrutinize ductwork for condensation risk; improper insulation or air-sealing can lead to mold growth. The plan-review timeline extends to 7-10 days because the inspector must coordinate with the electrical department if a service upgrade is needed. Once approved, the inspector visits to verify ductwork installation quality (no kinks, proper sealing at all joints with mastic or UL-listed tape, insulation intact), refrigerant charge, electrical connections, and airflow. If the ductwork does not meet Manual D design, the inspector will require remediation before sign-off. Permit fee: $250–$350 (higher due to system tonnage and complexity). Total project cost: $15,000–$22,000 (equipment, labor, load calc, electrical upgrade, ductwork) plus permits and inspections. Timeline to full completion: 12-18 business days.
Permit required | $250–$350 permit fee | Manual J load calc required ($400–$800) | Manual D ductwork design required | Electrical permit likely needed if service upgrade | EPA 608 cert required | 12-18 day timeline
Scenario C
Homeowner replacing evaporator coil and refrigerant charge on a 10-year-old air handler due to refrigerant leak, no equipment tonnage change, Greer city limits
This scenario illustrates the gray area between maintenance and component replacement. Opening the sealed system to replace the evaporator coil is a repair, not routine maintenance, and repair work triggering a sealed-system opening technically requires a permit under IMC Chapter 6. However, the 2015 IMC does allow certain repairs without new installation permits if they are restoring the system to original specifications and tonnage. The risk: Greer's inspector may classify this as a repair (no permit, but EPA 608 tech required) or as a system modification requiring inspection (permit required). To play it safe, you should contact the City of Greer Building Department before work begins and ask whether a 'coil replacement only, no tonnage change' job requires a permit. If you get written confirmation that no permit is needed, you are protected; if the inspector later arrives and finds unpermitted work, you can reference that email. In practice, most Greer inspectors require a permit for any coil replacement because they want to verify the new coil is compatible, refrigerant charge is correct, and ductwork is still sealed. The permit for a repair of this type is lightweight: submit equipment model, coil model, and reason for replacement (leak repair). Permit fee: $100–$150. The inspector will do a final walkthrough to verify the new coil is installed correctly, insulated, and that the refrigerant charge is within manufacturer spec. If you proceed without a permit and the inspector is called to the property later (e.g., by a neighbor or insurance inspector), a stop-work order and $500+ fine are possible. Timeline if permit is required: 3-5 business days. Total cost: $2,500–$4,000 (coil + labor + refrigerant + permit) vs. $2,400–$3,900 if you skip the permit (and gamble on enforcement). The permit is cheap insurance.
Permit likely required | Confirm with City of Greer Building Dept first | $100–$150 permit fee if required | EPA 608 cert required for tech | Same-day or next-day final inspection possible | 3-5 day timeline

Every project is different.

Get your exact answer →
Takes 60 seconds · Personalized to your address

Greer's Online Permit Portal and Filing Process

The City of Greer Building Department accepts most HVAC permit applications online through its permit portal (search 'Greer SC building permit portal' or visit the city website at greer-sc.gov). The portal is user-friendly for contractors and owner-builders alike. To file: (1) create an account with name, email, and address; (2) select HVAC or Mechanical as the permit type; (3) provide property address, owner contact, contractor name and license number (if applicable), description of work (replacement, new installation, repair); (4) upload equipment nameplate photo or spec sheet; (5) declare project cost (this affects permit fee calculation); (6) pay the permit fee by credit/debit card. Most residential replacements can be filed in under 10 minutes. The system sends automatic confirmation to your email within 1 business day and assigns a permit number.

Plan review happens asynchronously — the inspector may request additional information (site plan, load calc, ductwork diagram) via email, and you upload revisions directly to the portal. This back-and-forth typically concludes within 5-7 business days for straightforward replacements. Once approved, the portal status updates to 'Ready to Work' and you receive an email with the final permit document and inspection appointment instructions. Some contractors prefer in-person filing at city hall (100 W. Melrose Avenue, Greer, SC 29650) if they have plans to discuss or want immediate feedback; the Building Department is open Monday-Friday, 8 AM-5 PM, and in-person applicants typically receive same-day or next-day plan-review feedback for simple jobs.

The portal does not yet offer online final inspection scheduling, so after work is complete, call the Building Department at the listed phone number to book the final walk-through. Inspectors typically accommodate 2-3 day notice. Bring the permit document and any updated photos or load calcs to the inspection appointment. After sign-off, the Certificate of Completion is either printed on-site or emailed within 1 business day. Keep both the permit and the Certificate with your home records; they are essential for insurance, refinance, and future sale disclosures.

EPA 608 Certification Requirement and SC Refrigeration License Law

South Carolina law (SC Code § 40-11-810 et seq.) requires that anyone performing refrigerant work — including service, maintenance, and repair — hold a valid EPA Section 608 certification. This is not a Greer city rule but a statewide requirement that Greer's inspector enforces during final inspection. The EPA 608 exam tests knowledge of refrigeration principles, environmental regulations, and proper handling of ozone-depleting substances and hydrofluorocarbons (HFCs). There are four categories: Type I (small appliances), Type II (high-pressure systems like residential AC), Type III (low-pressure systems), and Universal (all three). For residential HVAC work in Greer, the technician must hold at least Type II (or Universal). Homeowners and owner-builders who want to perform refrigerant work themselves must pass the EPA 608 exam; the test costs roughly $150–$300 and is offered by testing centers statewide. Most HVAC technicians already hold the cert, so if you hire a licensed contractor, certification is their responsibility.

The Greer inspector will ask for proof of EPA 608 certification from the technician who performed refrigerant work. If the tech cannot produce a valid card or the name on the card does not match the work description, the permit is flagged and the system must be re-done by a certified person. This is a serious enforcement point because SC's Department of Labor, Licensing and Regulation (DHEC-OSFM) receives complaints and can impose fines up to $1,000 per violation on unlicensed contractors. If you, as a homeowner, hire an uncertified neighbor to do refrigerant work and the inspector discovers it, you become liable as the permit-holder. The contractor license itself (SC HVAC license) is a separate requirement from EPA 608, but the two often overlap; unlicensed HVAC contractors cannot legally work in SC on systems over $500 in value, regardless of certification.

Owner-builders pulling permits for single-family residential projects can perform the work themselves if they hold EPA 608 certification, but they cannot hire unlicensed labor to do the refrigerant work. If you are an owner-builder and want to avoid getting EPA 608 certified, you must hire a licensed contractor to do the refrigerant portions (opening the system, charging, testing) and can do non-refrigerant work (ductwork, electrical connections, installation prep) yourself — though this split responsibility is administratively messy and often not worth the savings. Plan accordingly during the permit phase.

City of Greer Building Department
100 W. Melrose Avenue, Greer, SC 29650
Phone: Contact City of Greer main number and ask for Building Department or Building Permits Division | https://www.greer-sc.gov (search 'permits' or 'building permit portal')
Monday-Friday, 8 AM-5 PM (verify locally; subject to city holiday closures)

Common questions

Do I need a permit to replace my old AC unit with an identical new one?

Yes, Greer requires a permit for any air conditioning replacement, even if you are staying the same tonnage and location. The permit ensures the new equipment meets 2015 IMC and IECC standards, the refrigerant charge is correct, and ductwork is intact. Permit fee is typically $175–$225 and the process takes 7-10 business days. Skipping it risks a $500+ stop-work fine and insurance denial if the system later fails.

Can I install a heat pump myself as an owner-builder in Greer?

Yes, South Carolina law allows owner-builders to pull permits for single-family residential projects. However, you must hold an EPA 608 certification to perform refrigerant work, and any ductwork or electrical modifications must also meet code. You cannot hire unlicensed labor to do the refrigerant work. If you lack EPA 608 certification, it is usually cheaper to hire a licensed contractor than to get certified and do the job yourself.

What happens if I install new HVAC without a permit and then try to sell the house?

South Carolina requires sellers to disclose unpermitted major work in the TDS (Residential Property and Owners Associations Disclosure Statement). Buyers can negotiate a price reduction, demand that the work be brought to code compliance retroactively (which is expensive and may fail inspection), or walk away entirely. Title companies often require a permit and Certificate of Completion before closing, so an unpermitted system can kill a sale or delay it weeks while you scramble to get it permitted and inspected retroactively.

Do I need a Manual J load calculation for a 3-ton-to-3-ton replacement?

No, a Manual J is not required for like-for-like replacements in Greer. However, if you change tonnage (e.g., installing a 4-ton unit where the old one was 3 tons) or switch from AC to a heat pump, the inspector will require a Manual J to justify the new size. A load calc costs $400–$800 and adds 2-3 days to plan review.

Can I just hire a handyman to replace my evaporator coil, or do I need a licensed HVAC tech?

A handyman cannot legally perform refrigerant work in South Carolina; the person opening the sealed system must hold an EPA 608 certification. A licensed HVAC contractor or certified technician is required. If the inspector finds that unlicensed work was done, the permit is denied and the system must be fixed by a certified professional at additional cost.

How long does a Greer HVAC permit take from application to final inspection?

For a straightforward replacement, expect 7-10 business days total: 3-5 days for plan review and approval, then 1-3 days to schedule and perform final inspection after the work is complete. Complex jobs with new ductwork, load calcs, or electrical upgrades can stretch to 12-18 business days. In-person applications at city hall can sometimes accelerate plan review for simple permits.

What if the inspector rejects my work during final inspection?

Common rejection reasons: refrigerant charge is off, ductwork has leaks, electrical connections are improper, or new equipment does not meet IECC efficiency minimums. You have 10-14 days to correct the issue and request a re-inspection (usually no additional fee). If corrections are major, contact the inspector or contractor to discuss before re-work to avoid repeated failures.

Do I need a separate electrical permit if I upgrade my panel or circuit for a new heat pump?

Yes, if the HVAC work requires a new 240V circuit or breaker upgrade, a separate electrical permit is typically required. The HVAC permit and electrical permit are filed separately and the inspector for each will coordinate. Most Greer contractors pull both permits at the same time to avoid delays. The electrical permit fee is typically $50–$100 in addition to the HVAC permit.

Is my homeowner's insurance valid if I skip the HVAC permit and the system breaks down?

Most homeowner policies explicitly exclude coverage for unpermitted work. If the system fails or causes water damage or mold, the insurer can deny the claim and you are liable for the full cost of replacement or remediation — potentially $10,000–$30,000. Even if the insurer does not discover the unpermitted work at claim time, they can still investigate and deny coverage later, leaving you unprotected after the damage occurs.

What does an HVAC final inspection in Greer actually involve?

The inspector verifies equipment nameplate data (model, serial number, tonnage) matches the permit, checks that the refrigerant charge is within manufacturer spec (+/- 3 oz typical), confirms all electrical connections are code-compliant (proper breaker, wire gauge, grounding), tests airflow and temperature rise at the air handler, and inspects visible ductwork for leaks, insulation integrity, and proper sealing. For heat pumps, the inspector also verifies heating and cooling modes work and that condensate drainage is sloped correctly. The walkthrough typically takes 30-45 minutes.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current hvac permit requirements with the City of Greer Building Department before starting your project.