TERMS AND CONDITIONS

Effective Date: April 16, 2026

Last Updated: April 16, 2026

EXECUTIVE SUMMARY

This Terms and Conditions document establishes the legal framework governing the relationship between Diamond HVAC Services Inc. and its customers. As a Mitsubishi Diamond Elite Contractor serving the Bay Area with certified expertise, we are committed to transparency and professionalism in all our business relationships.

These terms apply to all services provided by Diamond HVAC Services Inc., including HVAC installation, maintenance, repair, air quality solutions, and specialized system services, as well as the use of our website at https://www.diamondhvacservicesinc.com/. By engaging our services or using our website, you agree to these terms in full.

We encourage all customers to review these terms carefully. For questions or clarification, contact our certified team directly.

1. DEFINITIONS AND INTERPRETATION

1.1 Definitions

In these Terms and Conditions, unless the context requires otherwise:

• "Company," "we," "us," or "our" refers to Diamond HVAC Services Inc., a heating, ventilation, and air conditioning contractor based in the Bay Area, California.

• "Customer," "you," or "your" refers to any individual or business entity that engages our services or uses our website.

• "Services" refers to all HVAC-related services provided by Diamond HVAC Services Inc., including but not limited to:

- HVAC system installation, maintenance, and repair

- Wine Cooler Maintenance & Repair

- Air Purifier Installation

- Filter Maintenance & Replacement

- Sauna Repairs & Replacements

- Duct Cleaning and Duct Sanitizing

- Dryer Vent Cleaning

- Any other services described on our website or in service agreements

• "Service Area" refers to San Francisco County, Marin County, Sonoma County, and Napa County in the Bay Area, California.

• "Website" refers to https://www.diamondhvacservicesinc.com/ and all associated pages and platforms.

• "Service Agreement" refers to any written or electronic agreement, estimate, proposal, or contract for specific services between the Company and the Customer.

• "Property" refers to the residential l location where Services are to be performed.

• "Load Requirements" refers to the calculated heating and cooling capacity needed for a specific property to achieve maximum efficiency and comfort.

1.2 Interpretation

These Terms and Conditions shall be interpreted as follows:

• Headings are for convenience only and do not affect interpretation.

• References to singular include plural and vice versa.

• References to any statute or regulation include amendments and replacements.

• "Including" means "including without limitation."

2. ACCEPTANCE OF TERMS

2.1 Agreement to Terms

By engaging Diamond HVAC Services Inc. for any Services, requesting an estimate, scheduling an appointment, or using our Website, you acknowledge that you have read, understood, and agree to be bound by these Terms and Conditions.

2.2 Capacity to Contract

You represent that you are at least 18 years of age and have the legal capacity to enter into binding contracts. If you are accepting these terms on behalf of a business entity, you represent that you have the authority to bind that entity to these terms.

2.3 Changes to Terms

We reserve the right to modify these Terms and Conditions at any time. Changes will be effective immediately upon posting to our Website with an updated "Last Updated" date. Your continued use of our Services or Website after changes are posted constitutes acceptance of the modified terms. We recommend reviewing these terms periodically to stay informed of any updates.

2.4 Service Agreements

Individual Service Agreements may contain additional terms specific to particular projects or services. In the event of any conflict between these general Terms and Conditions and a specific Service Agreement, the Service Agreement shall prevail with respect to that particular service.

3. SERVICES PROVIDED

3.1 Scope of Services

Diamond HVAC Services Inc. provides comprehensive heating, ventilation, and air conditioning services to residential and commercial properties throughout our Service Area. As a Mitsubishi Diamond Elite Contractor holding the highest level of accreditation from Mitsubishi Electric, we deliver expert comfort solutions with over a decade of industry experience.

Our Services include:

HVAC System Services:

• Complete system installation and replacement

• Routine maintenance and tune-ups

• Emergency and scheduled repairs

• System upgrades and retrofits

• Customized load calculations for maximum efficiency

Air Quality Solutions:

• Air Purifier Installation

• Filter Maintenance & Replacement

• Duct Cleaning and Duct Sanitizing

• Indoor air quality assessments

Specialized Systems:

• Wine Cooler Maintenance & Repair

• Sauna Repairs & Replacements

• Diamond Thermostat Installation

Additional Services:

• Dryer Vent Cleaning

• Post-installation support and customer education

• Warranty services for installed equipment

3.2 Service Area

We provide Services within the Bay Area, California, specifically in San Francisco County, Marin County, Sonoma County, and Napa County. Services outside this designated Service Area may be available at our discretion and may be subject to additional travel fees.

3.3 Estimates and Consultations

We offer estimates for eligible services within our Service Area. Estimates are provided in good faith based on information available at the time of inspection. Final pricing may vary if actual conditions differ from those observed during the estimate, including but not limited to concealed structural issues, code compliance requirements, or additional work required to complete the project safely and properly.

3.4 Professional Standards

All Services are performed by certified professionals trained in the latest industry technology and installation best practices. We adhere to all applicable federal, state, and local codes, regulations, and industry standards. Our work is performed with the expertise and care expected of a leading HVAC contractor serving the Bay Area.

3.5 Service Limitations

We reserve the right to decline service for any reason, including but not limited to:

• Properties outside our Service Area

• Conditions deemed unsafe for our technicians

• Requests for services beyond our scope of expertise

• Situations where we cannot obtain necessary permits or approvals

• Non-compliance with these Terms and Conditions

3.6 Third-Party Products

While we install and service various HVAC systems and equipment, we are not the manufacturer of most products. Manufacturer warranties apply separately from our service warranties. As a Mitsubishi Diamond Elite Contractor, we are authorized to offer extended product warranties of up to 12 years on qualifying Mitsubishi Electric systems, subject to manufacturer terms and conditions.

4. PRICING AND PAYMENT TERMS

4.1 Pricing

All pricing for Services is provided in U.S. dollars. Prices quoted in estimates are valid for estimated validity period, 30 days from the date of the estimate unless otherwise specified. Prices are subject to change without notice, though any changes will not affect estimates or Service Agreements already accepted by the Customer.

4.2 Payment Methods

We accept the following payment methods:payment methods - cash, check, credit cards, ACH, etc.

4.3 Payment Terms

Payment terms will be specified in each Service Agreement and may include:

• Deposit: For installation projects, a deposit of 10% may be required to schedule work and order materials.

• Progress Payments: For larger projects, payment may be structured in stages tied to project milestones.

• Payment Upon Completion: For maintenance and repair services, payment is typically due upon completion of work unless otherwise specified.

• Net Payment Terms: Commercial customers may be offered net payment terms subject to credit approval.

4.4 Financing Options

We offer flexible financing options through FTL Finance to qualified customers. Financing is subject to credit approval and the terms and conditions of the financing provider. We are not responsible for financing decisions, terms, or disputes between customers and financing providers.

4.5 Late Payment

Payment is due according to the terms specified in your Service Agreement. Late payments may be subject to a late fee of 3% or the maximum amount permitted by law, whichever is less. We reserve the right to suspend or terminate Services for accounts with overdue balances.

4.6 Taxes

All prices are exclusive of applicable federal, state, and local taxes, fees, and assessments. You are responsible for all applicable taxes unless you provide valid tax-exempt documentation prior to service.

4.7 Additional Costs

You are responsible for additional costs that may arise, including but not limited to:

• Permit fees required by local authorities

• Costs to correct code violations or bring existing systems into compliance

• Additional work required due to concealed conditions discovered during service

• After-hours or emergency service premiums when applicable

• Travel fees for locations outside our standard Service Area

Any additional costs will be communicated to you for approval before proceeding with the work.

4.8 Disputed Charges

If you dispute any charges, you must notify us in writing within 30 days of the invoice date. Disputed amounts must still be paid while the dispute is resolved, with refunds issued if the dispute is resolved in your favor.

5. SCHEDULING AND ACCESS

5.1 Appointment Scheduling

Service appointments are scheduled based on availability. While we make every effort to accommodate your preferred dates and times, scheduling is subject to technician availability, weather conditions, and other factors beyond our control. Contact our certified team to schedule your service appointment.

5.2 Service Windows

Unless a specific appointment time is confirmed, service appointments may be scheduled within a time window (e.g., morning or afternoon). We will make reasonable efforts to notify you when our technician is en route to your property.

5.3 Access to Property

You are responsible for ensuring that our technicians have safe and unobstructed access to all areas where Services are to be performed, including:

• Clear pathways to HVAC equipment, ductwork, and service areas

• Access to electrical panels and utility connections

• Removal of personal belongings from work areas

• Adequate workspace for equipment and materials

You must ensure that someone age 18 or older is present at the Property during service appointments, or provide written authorization for work to proceed in your absence.

5.4 Rescheduling and Cancellations

If you need to reschedule or cancel an appointment, please notify us at least 24-48 hours in advance. Late cancellations or missed appointments may be subject to a cancellation fee.

We reserve the right to reschedule appointments due to emergencies, weather conditions, equipment availability, or other circumstances beyond our control. We will make reasonable efforts to notify you as soon as possible and reschedule at your convenience.

5.5 Delays and Project Timeline

While we strive to complete all Services within estimated timeframes, project timelines may be affected by factors including weather conditions, permit delays, material availability, concealed conditions, or changes to project scope. We are not liable for delays caused by circumstances beyond our reasonable control.

5.6 Utilities and Service Requirements

You are responsible for ensuring that necessary utilities (electricity, water, gas) are available and functional at the Property during service. If utilities must be temporarily disconnected during service, we will coordinate with you and make reasonable efforts to minimize disruption.

6. CUSTOMER RESPONSIBILITIES

6.1 Accurate Information

You are responsible for providing accurate and complete information about your Property, existing HVAC systems, service history, and any relevant conditions that may affect our ability to perform Services safely and effectively. This includes disclosing known issues such as asbestos, lead paint, mold, structural concerns, or previous unauthorized modifications to HVAC systems.

6.2 Property Condition

You represent that the Property is in suitable condition for the Services to be performed. You are responsible for:

• Ensuring the work area is safe for our technicians

• Addressing any hazardous conditions before our arrival

• Protecting your personal property in and around work areas

• Securing pets in areas away from work zones

• Ensuring adequate ventilation when required

6.3 Permits and Approvals

While we typically handle permit applications for installation projects, you are responsible for:

• Providing any necessary property owner authorization if you are not the owner

• Obtaining homeowner association (HOA) or architectural review approvals when required

• Ensuring compliance with any deed restrictions or easements

• Paying all permit fees and applicable charges

6.4 Maintenance Obligations

To maintain the performance, efficiency, and warranty coverage of your HVAC system, you are responsible for:

• Following manufacturer-recommended maintenance schedules

• Changing or cleaning filters regularly as directed

• Keeping outdoor units clear of debris and vegetation

• Promptly addressing any operational issues

• Scheduling recommended maintenance services

Failure to properly maintain your HVAC system may void manufacturer warranties and affect our service warranties.

6.5 Compliance with Instructions

You agree to follow all operational instructions, safety guidelines, and maintenance recommendations provided by our technicians or included in manufacturer documentation. Improper use or operation of equipment may result in system damage, safety hazards, and voided warranties.

6.6 Payment Cooperation

You agree to cooperate with payment processes, including providing necessary information for financing applications, responding to billing inquiries, and making timely payments according to agreed terms.

7. WARRANTIES AND GUARANTEES

7.1 Workmanship Warranty

Diamond HVAC Services Inc. warrants that all Services will be performed in a professional and workmanlike manner consistent with industry standards. We guarantee our workmanship warranty period, typically 1 year from the date of service completion.

If any defect in our workmanship is discovered within the warranty period, we will repair or correct the defect at no additional charge, provided that:

• You notify us promptly upon discovering the defect

• The defect resulted from our work