Expert HVAC & Plumbing Services

Comprehensive Mechanical Solutions in Fresno, CA

D & S Mechanical, Inc. provides high-efficiency air conditioning, heating, and full-service plumbing solutions tailored for the Central Valley climate. From heavy-duty commercial mechanical contracting to precision residential repairs, our licensed experts ensure your systems operate with maximum reliability and peak energy performance.

A crane lifting an HVAC unit above a one-story building on a sunny day.

Our Plumbing & HVAC Services

An air conditioning unit on a concrete pad in a yard with green grass and foliage.

Cooling Services

Precision cooling solutions designed to keep Fresno homes and businesses comfortable during peak summer heat.

  • Central Air Installation

    Energy-Efficient Home Comfort


    We provide professional installation of high-efficiency central air conditioning systems. Our team ensures perfect sizing and ductwork integration to maximize airflow and minimize your monthly energy costs in the Central Valley heat.

  • AC Repair

    Fast Diagnostics, Long-Term Fixes


    When your cooling system fails, our technicians provide expert diagnostics and scheduled repairs for all major brands. We focus on restoring your comfort quickly with durable parts and precision craftsmanship.

  • Seasonal Maintenance

    Extend the Life of Your System


    Our comprehensive seasonal maintenance includes deep cleaning, refrigerant checks, and electrical inspections. This proactive approach prevents unexpected breakdowns and keeps your cooling system running at peak performance.

  • Evaporative Cooling

    Natural, Cost-Effective Cooling


    We specialize in the installation and maintenance of evaporative cooling systems. These units offer an eco-friendly alternative for Fresno properties, providing fresh, chilled air with significantly lower operational costs.

Gas furnace in a basement with metal ductwork and a yellow gas line.

Heating Services

Dependable heating solutions to ensure safety and warmth throughout the winter season.

  • Furnace Repair

    Restoring Warmth to Your Home


    Our team specializes in identifying and fixing complex furnace issues, from ignition failures to airflow obstructions. We ensure your heating system operates safely and effectively when temperatures drop.

  • Heater Installation

    Modern Warmth for Every Room


    We install the latest high-efficiency gas and electric heating systems. Every installation is calibrated for maximum heat distribution, ensuring your property remains cozy while maintaining low utility bills.

  • Heat Pump Services

    Year-Round Efficiency and Comfort


    We provide specialized services for heat pumps, offering both heating and cooling in one efficient package. Our experts handle everything from refrigerant optimization to complex compressor repairs.

  • Pre-Season Prep

    Be Ready Before the First Cold Snap


    Our pre-season preparation ensures your heater is ready for winter. We perform rigorous safety checks on burners and heat exchangers to prevent carbon monoxide leaks and ensure operational reliability.

Plumbing manifold system: Red and blue PEX tubes connected to brass fittings, mounted on a wall.

Plumbing Services

Comprehensive water management and repair services for residential and commercial infrastructure.

  • Drain Cleaning

    Clearing Stubborn Blockages Fast


    We utilize professional-grade equipment to clear slow or clogged drains. Our deep-cleaning methods remove grease, hair, and debris, restoring full flow to your kitchen, bathroom, or main sewer lines.

  • Leak Detection

    Pinpoint Precision, Minimal Intrusion


    Using advanced acoustic and thermal technology, we find hidden slab leaks and pipe bursts without damaging your property. Finding leaks early saves you from expensive foundation damage and high water bills.

  • Sewer Line Repair

    Protecting Your Property’s Health


    From spot repairs to complete line replacements, we handle complex sewer issues with expertise. We ensure your waste management system is code-compliant and built to last for decades.

  • Water Heater Replacement

    Constant Hot Water on Demand


    We provide professional replacement for both traditional tank and modern tankless water heaters. Our team ensures safe gas or electric connections and optimal temperature settings for your comfort.

HVAC units and ductwork on a flat rooftop against a clear blue sky.

Commercial Services

Heavy-duty mechanical contracting and HVAC management for Fresno’s business infrastructure.

  • Industrial HVAC

    Robust Cooling for Industrial Spaces


    We design and maintain high-tonnage HVAC systems for warehouses, manufacturing plants, and large retail centers. Our systems are built to handle heavy thermal loads while maintaining strict energy standards.

  • Mechanical Contracting

    Built Strong for Fresno Business


    Our mechanical contracting services include complex piping, chiller installations, and system design for new constructions. We bring industrial-grade strength and reliability to every commercial project we oversee.

  • Building Management Systems

    Smart Management for Peak Efficiency


    We install and service Building Management Systems (BMS) that allow for centralized control of your HVAC and mechanical assets. This technology optimizes energy usage and provides real-time data on system health.