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.

Our Plumbing & HVAC Services

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.

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 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.

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.
