diff --git a/app/kontakt/actions.ts b/app/kontakt/actions.ts
index 47ad527..b482751 100644
--- a/app/kontakt/actions.ts
+++ b/app/kontakt/actions.ts
@@ -1,8 +1,8 @@
 "use server";
 
 import { z } from "zod";
-
 import { Resend } from "resend";
+import { verifyRecaptcha } from "@/lib/recaptcha";
 
 const resend = new Resend(process.env.RESEND_API_KEY);
 
@@ -19,6 +19,17 @@ const contactFormSchema = z.object({
 
 export async function submitContactForm(prevState: any, formData: FormData) {
   try {
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && process.env.RECAPTCHA_SECRET_KEY) {
+      const token = formData.get('recaptchaToken') as string;
+      if (!token) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+      const { success } = await verifyRecaptcha(token);
+      if (!success) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+    }
+
     // 1. Walidacja danych z formularza
     const rawData = {
       name: formData.get("name"),
diff --git a/app/layout.tsx b/app/layout.tsx
index f89bd69..7468915 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -4,6 +4,7 @@ import { Header } from "@/components/layout/Header";
 import { TrustBar } from "@/components/layout/TrustBar";
 import { Footer } from "@/components/layout/Footer";
 import CookieBanner from '@/components/CookieBanner';
+import Script from 'next/script';
 import { CompareBar } from '@/components/shop/CompareBar';
 import { AnalyticsWrapper } from "@/components/ui/AnalyticsWrapper";
 import { CookieSettingsFloatingIcon } from "@/components/ui/CookieSettingsFloatingIcon";
@@ -67,6 +68,12 @@ export default function RootLayout({
         <link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="anonymous" />
       </head>
       <body className="min-h-screen flex flex-col bg-background text-foreground">
+        {process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && (
+          <Script
+            src={`https://www.google.com/recaptcha/api.js?render=${process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY}`}
+            strategy="afterInteractive"
+          />
+        )}
         <Header />
         <main className="flex-grow">{children}</main>
         <TrustBar />
diff --git a/app/zamowienie/actions.ts b/app/zamowienie/actions.ts
index 3b6c5d8..4021302 100644
--- a/app/zamowienie/actions.ts
+++ b/app/zamowienie/actions.ts
@@ -2,6 +2,7 @@
 
 import { z } from 'zod';
 import { Resend } from 'resend';
+import { verifyRecaptcha } from '@/lib/recaptcha';
 
 const resend = new Resend(process.env.RESEND_API_KEY);
 
@@ -18,6 +19,17 @@ const orderSchema = z.object({
 
 export async function submitOrderForm(prevState: any, formData: FormData) {
   try {
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && process.env.RECAPTCHA_SECRET_KEY) {
+      const token = formData.get('recaptchaToken') as string;
+      if (!token) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+      const { success } = await verifyRecaptcha(token);
+      if (!success) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+    }
+
     const data = orderSchema.parse({
       name: formData.get('name'),
       phone: formData.get('phone'),
diff --git a/app/zamowienie/page.tsx b/app/zamowienie/page.tsx
index b883868..0f630a1 100644
--- a/app/zamowienie/page.tsx
+++ b/app/zamowienie/page.tsx
@@ -1,7 +1,7 @@
 'use client';
 
 import { useCartStore } from '@/lib/cart-store';
-import { useActionState, useEffect } from 'react';
+import { useActionState, useEffect, startTransition } from 'react';
 import Link from 'next/link';
 import { submitOrderForm } from './actions';
 import { ArrowLeft, CheckCircle } from 'lucide-react';
@@ -75,7 +75,20 @@ Wróć do sklepu
           </div>
 
           {/* Formularz */}
-          <form action={formAction} className="bg-white rounded-xl border border-border p-6 flex flex-col gap-4">
+          <form onSubmit={async (e) => {
+            e.preventDefault();
+            const formData = new FormData(e.currentTarget);
+            if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY) {
+              const token = await (window as any).grecaptcha.execute(
+                process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY,
+                { action: 'submit' }
+              );
+              formData.append('recaptchaToken', token);
+            }
+            startTransition(() => {
+              formAction(formData);
+            });
+          }} className="bg-white rounded-xl border border-border p-6 flex flex-col gap-4">
             <h2 className="text-base font-bold text-primary font-heading">Twoje dane</h2>
 
             {/* Hidden: produkty jako JSON */}
diff --git a/app/zapytanie-multisplit/actions.ts b/app/zapytanie-multisplit/actions.ts
new file mode 100644
index 0000000..c741f2c
--- /dev/null
+++ b/app/zapytanie-multisplit/actions.ts
@@ -0,0 +1,117 @@
+"use server";
+
+import { z } from "zod";
+import { Resend } from "resend";
+import { verifyRecaptcha } from "@/lib/recaptcha";
+
+const resend = new Resend(process.env.RESEND_API_KEY);
+
+const multisplitFormSchema = z.object({
+  name: z.string().min(2, "Imię musi mieć min. 2 znaki"),
+  phone: z.string().min(9, "Wprowadź poprawny numer telefonu"),
+  email: z.union([z.literal(''), z.string().email("Niepoprawny adres e-mail")]).optional(),
+  city: z.string().min(1, "Wybierz miasto"),
+  rooms: z.string().optional(),
+  message: z.string().optional(),
+  consent: z.boolean().refine((val) => val === true, "Zgoda RODO jest wymagana"),
+  productName: z.string(),
+  productSku: z.string(),
+});
+
+export async function submitMultisplitForm(data: any) {
+  try {
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && process.env.RECAPTCHA_SECRET_KEY) {
+      if (!data.recaptchaToken) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+      const { success } = await verifyRecaptcha(data.recaptchaToken);
+      if (!success) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+    }
+
+    const validatedData = multisplitFormSchema.parse(data);
+
+    const { error } = await resend.emails.send({
+      from: process.env.RESEND_FROM_EMAIL || "noreply@thermcool.pl",
+      to: process.env.RESEND_TO_EMAIL || "biuro@thermcool.pl",
+      replyTo: validatedData.email || undefined,
+      subject: `Zapytanie o multisplit: ${validatedData.productName} (${validatedData.productSku})`,
+      html: `
+        <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; border: 1px solid #e5e7eb; border-radius: 8px; overflow: hidden; background-color: #ffffff;">
+          <div style="background-color: #0F2A47; padding: 20px; text-align: center;">
+            <h1 style="color: #ffffff; margin: 0; font-size: 24px;">Zapytanie o multisplit</h1>
+            <p style="color: #2BA8E0; margin: 5px 0 0 0; font-size: 14px;">Domena: thermcool.pl</p>
+          </div>
+          <div style="padding: 24px; color: #1e293b;">
+            <h2 style="font-size: 18px; margin-top: 0; border-bottom: 2px solid #f1f5f9; padding-bottom: 10px;">Dane kontaktowe:</h2>
+            <table style="width: 100%; border-collapse: collapse; margin-bottom: 20px;">
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9; width: 120px;"><strong>Imię:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;">${validatedData.name}</td>
+              </tr>
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><strong>Telefon:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><a href="tel:${validatedData.phone}" style="color: #0F2A47; text-decoration: none;">${validatedData.phone}</a></td>
+              </tr>
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><strong>E-mail:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><a href="mailto:${validatedData.email}" style="color: #0F2A47; text-decoration: none;">${validatedData.email || 'Brak'}</a></td>
+              </tr>
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><strong>Miasto:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;">${validatedData.city}</td>
+              </tr>
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><strong>Produkt:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;">${validatedData.productName} (${validatedData.productSku})</td>
+              </tr>
+              <tr>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;"><strong>Pokoje:</strong></td>
+                <td style="padding: 8px 0; border-bottom: 1px solid #f1f5f9;">${validatedData.rooms}</td>
+              </tr>
+            </table>
+
+            <h2 style="font-size: 18px; border-bottom: 2px solid #f1f5f9; padding-bottom: 10px;">Dodatkowe informacje:</h2>
+            <div style="background-color: #f8fafc; padding: 15px; border-radius: 6px; font-size: 15px; line-height: 1.6; white-space: pre-wrap;">
+              ${validatedData.message || 'Brak'}
+            </div>
+
+            <p style="margin-top: 24px; font-size: 12px; color: #64748b; text-align: center;">
+              Zgoda RODO została zaakceptowana: <strong>${validatedData.consent ? "Tak" : "Nie"}</strong>
+            </p>
+          </div>
+          <div style="background-color: #f1f5f9; padding: 15px; text-align: center; font-size: 12px; color: #64748b;">
+            Wiadomość wygenerowana automatycznie z formularza multisplit na stronie thermcool.pl
+          </div>
+        </div>
+      `,
+    });
+
+    if (error) {
+      console.error("Resend Error:", error);
+      return {
+        success: false,
+        message: "Nie udało się wysłać wiadomości ze względu na błąd serwera pocztowego.",
+      };
+    }
+
+    return {
+      success: true,
+      message: "Dziękujemy za zapytanie! Skontaktujemy się z Tobą najszybciej jak to możliwe.",
+    };
+  } catch (error) {
+    if (error instanceof z.ZodError) {
+      return {
+        success: false,
+        message: "Wystąpił błąd walidacji. Sprawdź poprawność danych.",
+        errors: error.flatten().fieldErrors,
+      };
+    }
+
+    return {
+      success: false,
+      message: "Wystąpił nieoczekiwany błąd serwera. Spróbuj ponownie później.",
+    };
+  }
+}
diff --git a/app/zgloszenie-awarii/actions.ts b/app/zgloszenie-awarii/actions.ts
index 8145a12..ae43a93 100644
--- a/app/zgloszenie-awarii/actions.ts
+++ b/app/zgloszenie-awarii/actions.ts
@@ -1,6 +1,7 @@
 'use server';
 
 import { Resend } from 'resend';
+import { verifyRecaptcha } from '@/lib/recaptcha';
 
 const resend = new Resend(process.env.RESEND_API_KEY);
 
@@ -18,8 +19,19 @@ export async function submitAwariaForm(data: {
   city: string;
   preferredDate: string;
   preferredTime: string;
+  recaptchaToken?: string;
 }) {
   try {
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY && process.env.RECAPTCHA_SECRET_KEY) {
+      if (!data.recaptchaToken) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+      const { success } = await verifyRecaptcha(data.recaptchaToken);
+      if (!success) {
+        return { success: false, message: "Weryfikacja bezpieczeństwa nie powiodła się. Odśwież stronę i spróbuj ponownie." };
+      }
+    }
+
     await resend.emails.send({
       from: process.env.RESEND_FROM_EMAIL || 'noreply@thermcool.pl',
       to: process.env.RESEND_TO_EMAIL || 'biuro@thermcool.pl',
diff --git a/components/awaria/AwariaClient.tsx b/components/awaria/AwariaClient.tsx
index 2a43ce6..6a6dd1c 100644
--- a/components/awaria/AwariaClient.tsx
+++ b/components/awaria/AwariaClient.tsx
@@ -125,6 +125,14 @@ export function AwariaClient() {
     }
     setIsSubmitting(true);
     
+    let recaptchaToken = '';
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY) {
+      recaptchaToken = await (window as any).grecaptcha.execute(
+        process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY,
+        { action: 'submit' }
+      );
+    }
+
     await submitAwariaForm({
       isUrgent,
       brand,
@@ -139,6 +147,7 @@ export function AwariaClient() {
       city,
       preferredDate: '',
       preferredTime: '',
+      recaptchaToken,
     });
     
     setIsSubmitting(false);
diff --git a/components/forms/ContactForm.tsx b/components/forms/ContactForm.tsx
index 0d6b1af..0a03218 100644
--- a/components/forms/ContactForm.tsx
+++ b/components/forms/ContactForm.tsx
@@ -49,6 +49,14 @@ export function ContactForm() {
     });
     formData.append("consent", consent ? 'true' : 'false');
 
+    if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY) {
+      const token = await (window as any).grecaptcha.execute(
+        process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY,
+        { action: 'submit' }
+      );
+      formData.append('recaptchaToken', token);
+    }
+
     const response = await submitContactForm(null, formData);
     
     setServerState({
diff --git a/components/shop/MultisplitContactForm.tsx b/components/shop/MultisplitContactForm.tsx
index ffe9113..9a7b3b5 100644
--- a/components/shop/MultisplitContactForm.tsx
+++ b/components/shop/MultisplitContactForm.tsx
@@ -2,6 +2,7 @@
 
 import { useState } from 'react';
 import { Check, Loader2 } from 'lucide-react';
+import { submitMultisplitForm } from '@/app/zapytanie-multisplit/actions';
 
 interface Props {
   productName: string;
@@ -38,20 +39,28 @@ export default function MultisplitContactForm({ productName, productSku }: Props
     setLoading(true);
     setError('');
     try {
-      const res = await fetch('/api/contact', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({
-          name: form.name,
-          phone: form.phone,
-          email: form.email,
-          city: form.city,
-          subject: `Zapytanie o multisplit: ${productName} (${productSku})`,
-          message: `Liczba pomieszczeń: ${form.rooms}\n\n${form.message}`,
-        }),
+      let recaptchaToken = '';
+      if (process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY) {
+        recaptchaToken = await (window as any).grecaptcha.execute(
+          process.env.NEXT_PUBLIC_RECAPTCHA_SITE_KEY,
+          { action: 'submit' }
+        );
+      }
+
+      const res = await submitMultisplitForm({
+        name: form.name,
+        phone: form.phone,
+        email: form.email,
+        city: form.city,
+        rooms: form.rooms,
+        message: form.message,
+        consent: form.consent,
+        productName,
+        productSku,
+        recaptchaToken,
       });
-      if (res.ok) setSent(true);
-      else setError('Błąd wysyłki. Zadzwoń do nas bezpośrednio.');
+      if (res.success) setSent(true);
+      else setError(res.message || 'Błąd wysyłki. Zadzwoń do nas bezpośrednio.');
     } catch {
       setError('Błąd połączenia. Spróbuj ponownie.');
     }
diff --git a/lib/recaptcha.ts b/lib/recaptcha.ts
new file mode 100644
index 0000000..ea7214e
--- /dev/null
+++ b/lib/recaptcha.ts
@@ -0,0 +1,9 @@
+export async function verifyRecaptcha(token: string): Promise<{ success: boolean; score?: number }> {
+  const res = await fetch('https://www.google.com/recaptcha/api/siteverify', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+    body: `secret=${process.env.RECAPTCHA_SECRET_KEY}&response=${token}`,
+  });
+  const data = await res.json();
+  return { success: data.success && (data.score === undefined || data.score >= 0.5), score: data.score };
+}